Disk Drive works very inconsistantly

I’ve been having issues with my disk drive recently. I have taken it apart and put it back together multiple times in an attempt to fix the problem, each time resulting in the disk drive acting differently. Sometimes it accepts the disk with a bit of force then can eject it easily. Sometimes it tries to eject when there is nothing in there (despite the black arms on the disk drive itself not being stuck upon inspection). Sometimes the disk will go half in, but it won’t be detected and the disk drive won’t try to roll it inside (this is the most common). It appears to be a problem with the arms, but upon inspection, nothing seems to be wrong. Any suggestions as to how to fix this?

Edit: I have a CAH 1200 series