Skipping spots when engraving?

Hello… So I seem to have a problem with my engraving… Recently my board went out so I had to replace it and ever since I did I have been having problems with engravings having skipped spots… I’ve attatched a photo… Before I was able to run my engraver at around 2800mm now I have to slow it down to about 1500-2000mm to get a clean even burn it is not always every engraving either sometimes they come out fine but others do not even in the same burn cycle… I have a 15w laser running GRBL 1.1f and these are the settings currently on it… I have checked to make sure the Baud and what not are correct along with $30 matching the S-Value… Oh ALSO, the fan on my laser is now always on… before it would only be on when engraving… Idk if that helps.

$0=10 $1=25 $2=0 $3=5 $4=0 $5=0 $6=0 $10=1 $11=0.010 $12=0.002 $13=0 $20=0 $21=0 $22=0 $23=0 $24=100.000 $25=1000.000 $26=250 $27=1.000 $30=255 $31=0 $32=1 $100=80.000 $101=80.000 $102=80.000 $110=4000.000 $111=4000.000 $112=6000.000 $120=800.000 $121=800.000 $122=5000.000 $130=400.000 $131=300.000 $132=200.000 ![image0|375x500, 100%](upload://zMynnGur4cyvR5Cd5pl65bfy0WZ.jpeg)

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