Well, I have had very little luck with improving things. The misting with water definitely helped aesthetically and may have improved cutting moderately. Cutting two and three times helped only very modestly even when I played around with the focus depth Now I am trying to cut from both sides by creating a jig, not ideal but running out of other experiments to do.
100 Watt Laserworld TH 9060 pass through CO2 laser (220 volt)
Laser cut 5.3
JCUT 25S 4.5kW (6hp) water cooled, dual spindles, 1300X2500x300(z) or approx 4'x8'x12" table
DSP controller
20" powermatic planer
18" Jet Bandsaw