How odd... I have the opposite problem.. Contact fine with my PP, won't screw on my friend's provari... Seems more like a thread issue too.. It wont really screw on at all... And then by SB, as mentioned... Come to think of it, I have been having issues with the precise... Sometimes it doesnt make great contact and I get a chinsy bit of vapor... I thought it was that the sides of my button are wearing out and not making good contact. If I push down and to the side it seems to get better... Maybe its a combo of the two.
Now that is strange. I would contact Jim, perhaps arrange an exchange. Your threads might be burred or screwy or something...
Mine fits well on all my mods so far. I even got it on the Copper Q37#@% whatever it's called. (love it, but can't remember the name ever). I didn't fire er up on the Copper, I didn't have a charged battery, but will try it at a later date, just out of curiosity.
hmmm, but maybe my adapter thingie was still in my SB? Shoot, now I have to go check. The kids have been doing the ranch chores for me, so it's not been in use for a few days while I cling to the laptop researching everything under the sun that pertains to vaping lol.