Getting a double image on the left side when engraving

I certainly can’t say for sure, but my first reaction would be: did you try reducing the speed? I’ve had similar problems with my A5 PRO Atomstack with small tight vectors running over 3000…3500mm/min or so.

If not, then might be a problem with belt tightness … when adjusting your rollers & belts, and tilting the frame at a 45deg angle, the laser should, by gravity, slowly and consistently roll down the frame. If not, you have something too tightly set. If too fast, it’s too loose. Gotta get it right!