If yer head isnt too far up stihl's azshole, sell that silly thing and message pav for a brand new cs 1201p. Bigger crank and piston rod than an 090. His port work/milling recipe is widow-making, im sure he could tig up a full wrap:
Hi guys im Robin Wood from AS, thought it could help reach guys in here for some outlaw saws.
PM me for more details
I and many others here have had stellar business with the Pav.