Pretty happy with my new laser tube. 8mm pine in one pass!
What power is your new tube? And where did you purchase it?
Still 40W believe it or not. It’s a TONGLI purchased off eBay.
I also replaced the optics. Nothing fancy but at least they are completely clean.
Now I’m wondering if I could hit 10mm. 
That’s impressive for 40W. Is your wood from a US source?
no I live in Europe