Weird, the videos that I posted are gone...and I thought I replied to ya, John.
Like the 335 Husky, the 192T crankcase bolts to the cylinder right at the centerline of the crankshaft, so each part has half the mating surface for the bearings and seals, thus the cylinder can't be decked to up the compression and change the squish. So that leaves porting the cylinder (exhaust/intake/transfers, and modding the muffler as the main mods that Ed did to the saw. It cuts about 30% faster than stock or a bit more, based on the videos he took.
All other saws that Ed and other good builders mod show cut times at least 40% faster, often a lot more!! As does the 200T's that Ed did for Craig, which are the only saws around that would surely relegate my hot 335 to the also ran division....
Ok jabberwock, you got me there....but just wait till the piped 5100 hits town...