I just got mine in the mail today. its very nice and so far works great. its too bad that if you use an 18650 with the ext cap it doesnt screw in all the way...seems to be about a .5 to 1mm gap. other than that...time will tell
Glad you are enjoying it! Are you using the AW batteries or another type?
The AW high drain batteries fit perfect. Some of the other 18650 batteries that have a protection circuit are much longer and can leave a gap