Used a 3d pen to join the seams and emulate welding marks, sanded it with 120 grit sandpaper and then lathered on wood filler mixed with acetone. Going to let it dry overnight and then sand it down with a finer paper for a smooth finish.
@jetpacmonkey oof! Try tightening the y-axis belts a bit. If that doesn't work, see if your printer has a subreddit. I've found r/prusa to be super helpful.