My first was with a CR123 light that the back end of the reflector had shorted out the driver circuit. Tossed the driver altogether and replaced the broken Luxeon 3 with a no-name 3W LED. Still have that light in the car. The head can not now be screwed down far enough to do this thanks to some hot glue on the threads.
Good job. The budget lights become an even better value if you don't mind changing stuff around on them. That way if there is a part you don't like (like the LED on yours) you can change it out and have a much better light (and still not spend that much). I'm glad yours is working out so well.
My Ultrafire C8 Q5 change to an R5 with a 1.2a 5 mode driver. Waiting for the R5 . Ordered one from KD on a 14mm star, have one already on a 20mm star but the driver pill looks to be 18mm
Would I be better off cutting the 20 down? or go with the 14?
There are no components in the star so it ought to be OK to cut it down - just be a bit careful with the shears and make sure you clean up the edges - most of those stars are aluminium cored for heat sinking - make sure the aluminium core isn't touching anything it shouldn't. Remember to leave yourself a couple of solder pads to solder the wires to the thing. Obvious I know, but guess why I said it?
Maybe Kais 'R5's have changed in the meantime but the ones I ordered ~2 months ago are noticably dimmer than R5s I bought from a local official CREE dealer (still bright though). I'd say I received R4s.
This is the only reason why i havent really gotten into the MCE's or P7's, its like some of the Olights out there with the Hybrid Reflector--gives you a smooth beam but with a dark ring in the middle.