There is a PCC I would like to buy for 808 manual batteries, but the website says only automatics fit. The case looks like it is one where a silver threaded piece tilts out of the case and you screw the battery on (don't know if there is an actual term for that). My question is why the batteries won't fit? Isnt' it possible to just screw the batteries on so the button is up and it doesn't have to slide down into the indentation?