In need of feedback Co2 laser

[markJL]

Recently sent out Laser for re-gas after drop off of power to about 30% of full speed.

Returned I installed, start to cut single cuts just to test? on .125" clear acrylic
result: work fine all 4 areas of a 12 x 24 production sheet.

Proceeded to set up nested production file and started fine.
Result: Starting from the right top laser works fine about 1/2 way it looses cutting depth.

Check beam alignment and made small small change proceeded to single cut all four sides
Result: Works well.

Check all wired and fitings
Result: everything tight and clean

Clean optics
Result:Ok but still order new Focus lens not installed at this time.

Isolated power input places on single circuit with industrial cord. Then ran production parts again.
Result the same good 1/2 way rest not cut thru.

Table true and flat

Question, The machine is acting like the laser is dropping when active for some time cannot see anything else and wish to here some ideas if possible.

Thank you
M

[cinematic2]

Start cutting from far end and you will know is it loosing power or has low power at all.