Copland CDA288 drawer alignment issue

Hi,

I have a Copland CDA288 that I've just replaced all the broken drive gears in as the drawer suddenly stopped opening/closing properly. Unfortunately no matter what position I try to align the tray to when pushing it back in, it simply doesn't want to work properly when powered up. Without the top tray assembly on the mechanism, the drawer seems to open/close ok but as soon as I re-fit the top tray assembly, it has the issue that you can see in the video here - https://photos.app.goo.gl/9wkttRje7ohxQdvK6

Does anyone know how to re-align these trays correctly so I can try and get it going again as it's a lovely player.

Thanks