Okay, so I finally fixed the gearbox in my sig. However, now I can't seem to find a battery that will fit. I bought a small type Nihm battery, but it doesn't fit at all. I don't really want a peq box cause they throw everything off balance. I found a link that said a Lipo battery with dimensions equal to or less than 132mm x 21mm x 16mm should fit, but I can't find any batteries that size or smaller. Anyone have any ideas?