I think its no secret the A1 might have the most frustrating bed plate to have to reinstall and get to align properly. I've created this clip on bracket that affixes to the back right corner of the bed in order to try and at least help make the processes a little smoother to get that alignment dialed in the first time. I think a smooth cover over the magnets like like all the other printers have would have helped, but for whatever reason Bambu Labs didnt do it for the A1 so I at least hope this model will help you get closer to achieving that alignment.

I've had trouble with other designs staying put so there are 4 small points of contact to help hold it in place and more importantly KEEP it in place. I plan to update this model with 2nd optional bracket in the top left corner to further help align the plate in the future.

Installation: 

Remove thin supports. Slide the back left posts on to the “Leave Room For Heatbed Movement” warning tab and rotate up to snap the bracket in place. 

Print in PETG, or better, given the bed gets hot. Model is compatible with the current firmware Nozzle Clumping Detection.