Sony Cassette Decks Question w/ Door issues after belt changes on TC-WE625 and TC-WR545

Hi, I installed OEM belt kits last night on a Sony TC-WE625 and TC-WR545 cassette deck.

Problem: One of the two doors on each unit will now not open/release properly. It appears each has a transport door now thinking it has a cassette loaded/playing looking at a small plastic (white) release stop. I can manually push a screw driver down to release but I run into the same problem again.

One of the two transports on each unit went smoothly without any issues, however as mentioned the other did not.

Question: How do I specifically fix this problem on each?

Thanks for your help!

Picture of what stop/release that appears to be causing issues after belt changes:
https://i.ibb.co/pJJ4TG8/20200529-093606.jpg