A few months ago, I broke the battery door on my PSP2000 Since then, Ive bought new ones on some shady chinese website. My problem is that the battery won't stay in place with those new doors. There seems to be too much free space between the door and the battery. Whenever I change position and my psp moves back a little bit, the PSP shuts down because the battery moves inside. Right now, I'm using paper to keep it in place. I just folded a business card in 3 and put it between the door and the battery and so far, it seems to be solving my problem. However, I'm not a big fan of using paper next to a heat source so I was wondering if you guys knew any alternative to paper.