AMS Port 3 gets Stuck when changing Filament

[ChrisLB]

Check the last post here:

"Failed to pull out the filament..." error only when using AMS spot A3

After seeing a solution with a drill and zip ties on a Facebook group, someone created this solution. I tried it yesterday and so far its worked for me. I can even print the CF filaments in slot A3 without the issue. Its the angle of the tubing going into slot A3 that causes it according to the people on one Bambu facebook group. This little piece fixes the angle. You just have to make sure to install it in the correct direction. AMS INSIDE PTFE GUIDE by papsjundi - MakerWorld

This fixed the issue for me.