Thank you for the information Jack. I don’t know how much of a problem this is going to be down the road, whether I should look into getting a lens/tube assy., or if I should contact OMTECH about it. In a nutshell the lens tube is slightly too small and it rocks back and forth ever so slightly when touched. Please excuse the poor drawing but it might explain it better.
The red circle is the lens tube and it pivots at the set screw, along the X axis, enough for it to bug me but I don’t know if it’s enough to be detrimental when cutting or engraving. After resting the nozzle on a 3-2-1 block to set nozzle height I removed the lens tube from the head. There was about 15mm of tube above the screw mark. I pushed it in another 15mm or so but it had no real effect on the wobble. I suppose I could put a layer or two of Teflon tape around it to take out some of the play. Or I could be overthinking this and I should just let it be. It just bugs me. Here is a picture of the tube and nozzle.
If I was going to replace it, what should I be looking for? I do about 60/40 engraving to cutting.