Hi, eddamoo and welcome to BLF! Sounds like yours is underdriven compared to mine, which is at least the equal to my HD2010 if not slightly brighter. Can't help you on your questions, however.
Welcome eddamoo! I don't believe you can measure the resistors value while in the circuit. You'd have to desolder one end to take it out of circuit to measure it correctly. Can't you just go by their value stamped on top?
Also, are you aware of low tailcap current readings with cheap multimeters or even decent meters with cheap thin leads? Can you try using heavier/thicker wire for leads (just shove it in the sockets so long as they make decent contact) and test again. It does sound like you have an underdriven model though comparing to a C8 at 3A. This light should be blindingly bright in it's hotspot even without being modded! I reflected mine off some white aluminum trim on my garage outside and it almost blinded me!
-Garry
Thanks for the welcomes guys, this place certainly seems very friendly! 
My DMM’s Leads are pretty good and like you said, have easily read over 3A before, but will indeed try some thicker wires just in case.
I totally forgot that i took a photo of the driver and there are 3x R150 (0.15 Ohm) resistors. So thats 0.45 Ohm total. I don’t know if the current regulation circuit is linear to the resistance - does anyone know more who could please educate me? I have sat before me some R27 (0.27 Ohm) surface mount.
Hi eddamoo and welcome.
What cells are you using in that T08 ?
Welcome to the BLF family, Eddamoo!!
Hi guys, resistor mod results are in for me, wired in parallel to the 3x R150 resistors…
High power
Original… 1.95A
1x Extra R27 .27 ohm resistor… 2.45A
2x Extra R27 .27 ohm resistors… 3.2A
Perfect! Have a great weekend all!
Nice! Thanks for posting, will mod mine when it arrives! 8)
Thanks old and all!!
Will this light work with flat top cells? It looks like theres a chance the fatter +B could short against the -B trace…???
kramer:
My new Keeppower 3400 button tops will not work in the ZY-T08. However my Callie's Kustoms 3100 raised flat tops work perfectly:
awesome thanks between…
can you do a favor and measure these two distances? I only use flat-top, unprotected cells so this is a concern for me…. I’d be a little uncomfortable if the +B of the batteries is close to the -B trace on the board.
THANKS!!!
Distance between outsides of the buttons is about 27.5mm
Inside Diameter of the circle on the board is 24mm, so the cells overlap and actually rest on the circle.
Please explain this to me - I'm an electronics dunce and I would be curious why it makes a difference. I've measured length on the KP's and they are identical (68.5mm) to the CK's. So out of curiosity, I tightened the board by about a half turn (didn't notice it being loose before) and inserted the Keeppowers and they now work fine. So I checked the distance on these and it's about 23.5mm. Does the lower surface area of the button tops cause more pressure on the board?
thanks for the great review and info found in this thread!
I hope you guys don’t mind me asking can someone please recommend some decent 18650 batteries from Manafont?
I am asking because i am interested in this bad boy but i need a pair of 18650 and would like to order all my stuff from 1 place and have the shipped at once (i live on the other side of the world ><)
I already have the trustfire TR-001 charger.
Thanks in advance
Mario
am I gonna be the only guy on BLF that doesn’t have one? 
I don't have one yet or the HD2010. :O
Mario, you can order these from Manafont, but I won't really recommend them:
No one that I know of has found fakes at Manafont. I have two pairs and they work fine, but they don't have the advertized capacity. Seems to be some issues with shipping out batteries from China lately, though.
Yes!
Ok, kramer and scaru: Apparently my CK flat tops are overlapping the -B trace on the board, and the KP button tops are right at it, so why am I not having an issue with either? I've shaken it and even rode with it on my bike briefly and had no issues or mode switching, although the light is really too big for biking.
scaru pretty much nailed it…
If the +B of either cell touches that outer trace !! you’ve got a short across the batteries (-B to +B). Probably not a big deal with small button cells like the ones in olds picture, but flat tops and unprotected cells with wide/blunt +B could be a problem. I would be very cautious using the 27.5mm cells if the ID of the -B trace is only 24mm across. With protected cells is less of a concern though…. but still its not good practice to trigger the protection circuit on any cell.
THANKS!!! very useful information, I think I’l pass on this light… either that or get small button top cells.
Thats a good question…??? I can’t answer that one.
EDIT One possibility is that -B “looking” trace-ring (where scaru points to) is not actually grounded/connected to the -B battery tube on the battery side of the board.