Clunking trans, shift keys?

alright, so i have a dana-foote trans and i replaced one of the shift keys and it worked again now it is chugging and shit so now i am pretty sure i need the other one. i was wondering if i could use the shift keys from another brand cause the damn things are so expensive( $35 for one!!) . thank you
or if you guys think it is something else, but i am pretty sure its the keys.
if anyone has some i could buy?

Chugging like that usually means shift keys. Did you inspect the belt and any pulleys? I doubt your problem is there, but it wouldn't hurt to check.
Shift keys aren't cheap anywhere, unless you can find some used that aren't worn out or broken. Keys from another brand won't work, and even keys from certain other Foote transaxles won't work.