My Xbox that I've been playing customs on since 2013 is getting worse and worse at reading discs (it seems fine at everything else) so i've switched to a newer Xbox (Both old white case, seemingly same model but with different input for power cable) but when i use customs on it it doesn't load official songs except for the Rock Band 3 disc setlist and the Rock Band 1 export.
Needless to say I'm baffled. I've been running the old Xbox purely for rock band with everything else on the newer Xbox but as I'm typing this the old Xbox's disc readers finally kicked the bucket. Any info on how to fix my problem on the newer Xbox? (I don't know the exact model numbers or anything sorry.)