Can anybody explain the ghosting I'm getting on smaller text? Larger text works fine.

Can anybody explain the ghosting I’m getting on smaller text? Larger text works fine. My alignment is good, cuts are great. I’m using a SAITE head with air assist. Same result in CorelDraw and LaserDRW with various fonts. Is my lens out of focus?!

perhaps a reflexion in the air assist if it is in aluminium