Hi people, not a regular on this thread, but have read most of the posts. I'd like to ask for some input. Got a zmax, and the following day the top cap came right off while unscrewing a vivi, twisting off the wires. Vendor said it was a fluke, and sent another one...I've had it three weeks, and it happened again twice...although this time I did not twist off the wires. I've been able to just put it back in, but now the led display screen is no longer exactly flush. For the 120 bucks (v1) I'm not happy about the top cap instability. I otherwise have liked the mod...but am thinking about recouping my losses at this point while there is still a one month guarantee, sending it back for a refund, and just getting a provari. Any thoughts...
I use the 3.5ml vivis on mine. I turn it until I can feel it makes contact with the pin and then give it another quarter to half a turn. Never had a vivi come loose and no problems with top cap. I think you may be over tightening the vivi?