first let me thank you for still helping me. I went and engraved a new much larger image that might make the problem easier to see, this ones from the original Alice in wonderland you should see that it adds an overlay of the image at an offset.
shadows from my machine not my finger
and a close up
its easiest to see with the cup and words. as for the commands I'm using (M42 P4 S) which lets me tun on and set the D4 pin in the arduino id use the fan port but i still need it for printing. i cant think of a hardware issue that would cause this it does this in one pass not like it engraves over itself.
again thanks for not giving up.