I got my hands on the schematics for some of the different acera models and it seems that it uses a RMD- M330 model with a 7- speed adapter. It looks like that what actually may have broken was the adapter, so I may see about just upgrading the whole drivetrain so it won’t be so hard to find new parts. The derailleur i have now isn’t even listed on their main products page anymore, so I think I’ll look into getting a 9 speed instead. Are there any particular 9- speeds to look out for? What I’m mostly looking for is climbing power, although I still do want a few "fast" gears