does anyone have any problems with their AW ic 18650 2600mah rechargeables batteries positive side post becoming indented ??? The top off my battery looks like its getting a deep indentation from thje shape of the cap from my precise plus 18650. maybe i'm pressing too hard on the firing button and it's pushing the battery upward toward the post??? the problem is now the precise plus 18650 is misfiring a lot!! any thoughts??