I for one am not in the 100-1 crowd. I have always run stuff in the 32-50-1 range. Yes I know the rpms could be higher but Im still on the 1st gallon. Sat I started leaning it a bit at a time.
Its running a BME 24/10 which doesnt seem to be a huge load on it and its pretty free revving head is not hot to the touch after landing.
As to the muffler cutting of the tips is my 1st move after I buy a Bisson. Im not a big fan of their mufflers as I find the construction poor and restrictive, Ive had 3 crack on me despite being mounted correctly ( braced ) at the time it was the only one I could find.