just wanna say thanks to dwcraig. didn't have a hammer handy, did have some padding and a moderately heavy screw driver. Attached a 22mm atty, padded top and bottom to a solid surface and went at it. Removed the lipo before I did this obviously. It helped, if it was a 2mm gap now its down to 0.5mm Being OCD as I am, ordered some rubber mullets (23mm head). Going to attempt to get the gap as close to 0 as possible [edit1]The entire process reminded me of a UD Zephyrus V2 clone I bought for 10 bucks, ended up trashing it. Shoulda kept the atty for situations like this. [edit] Dubbzz is right, the 510 pin can be removed from inside the mod by removing rubber cover > battery cover > battery > plastic panel > then unscrewing the white plastic grommet. Be prepared to do this for a while as space is minimum and I got fat fingers. Also it was a bit of a pain to put the 510 pin back in. However this process was not really necessary (unless hammering the atty damages the 510) for me as the silver ring around the 510pin is press fit