It's ran great w/the exception of RPMS being about 500 too low; for 4 years. I tried adjusting the governor & could not get it to work properly. Throttle adjustment got the RPMs up; then when I engaged the PTO to cut; it started to bog down & governor would not kick in w/a load. I replaced ALL bearings & seals in Gearbox; spindles have worked well. It has always run a little low on RPMs; about 3000-3200. Side by side my Exmark Lazer sounds much higher & cuts much better & moves faster. I greased the upper vertical governor rod that goes down into the engine; could be worn out. Going to reset Governor: some info states to turn linkages to open throttle then turn vertical governor nut CCW & retighten governor linkage; another search states a little different. I'll figure it out; not a 911.