According to my experience the problem is that probably the power of the source that you have installed does not correspond with the power of the laser tube. Could you check that?
Best regards
I am an experienced laser technician.
User of laser cutting machine Buchicnc EVO 14.
User of laser recorder EVO 5.
CNC router user, with 3 x 2 m table Auto Tool Changer
I usually design my own laser files designs for laser cutter & laser engraver with CorelDraw, Laser Cut 5.3, RDWorks V8.
Laser cutters & CNC Routers BuchiCNC USA
CNC Router ATC
EVO 14