I have a REO grand and a mini... Most of the time I use my Grand, Today when I pick up my mini I noticed a chunk of white stuff on the bottom of the mini (where the screw is) it was stuck on! Had to use force to remove it.. First thing that came to mind was the battery, thought it leaked or explode.. But when i looked at the batter it was fine. And it still fired no problem...For sure it wasn't juice... Any idea guys? If im not using the mini for a week at a time should i remove the battery?