Interesting that some are getting 5 amps with unprotected cells. I actually got a higher reading with protected Solarforce cells than I did with unprotected Panasonics.
Gonna give it another go . . . see if I tested the wrong mode or something . . .
edit: I get 3.70 amps with 3 fully charged Panasonic 2350s. (the Reverend's) I only have two IMRs but, probably be stupid to try that. I also have 3 King Kongs on the way from Hank so, gonna try that too.
I just stuck 3 freshly charged Reverend Jim batteries in mine and it pulled 4.35 amps. I have the old plastic battery holder perhaps that new battery holder is an amperage bottleneck which isn't really a bad thing when you are talking about 12 plus amps of juice flowing through this monster. The tail cap on mine lines up absolutely perfect also.
Edit: I just noticed you have the 20 second step down driver I just put the other turbo driver in mine with no step down.
I have a step down driver on order I will let you know when it gets here. I am almost positive the battery holder has something to do with it. Try taping three batteries together eliminating the battery holder and take a reading and see what you get.
I'm still waiting on my group buy dry to arrive, but i've been eyeballing a TK70 since I bought some 10,000mah D cells and the 808 maha charger.... yikes $200 though is a lot.