I received my morris ring a few weeks back and had a false start when i could not get it to start. Turned out to be a carburetor issue, from sitting I guess. After I verified the timing about 6 times and opened the carb needles to the full open position (and a shot of parts cleaner), then put the needles back to break in levels. She started first flick.
The air temp is pretty cold (34*f) and the cylinder temps are lower than with the 54* timing. ( I am measuring with sensors mounted to the exhaust headers). The interesting thing here is that now #2 is now the cold cylinder? idle is at 1650rpm #1=149*f, #2=84*f, #3=135*f. At 4,000rpm, #1=202*f, #2=103*f, #3=195*f. I was hoping for a more even cylinder temp spread. Max rpm was 6500 with a 22"x8" carbon prop. Needle settings were HS=1.5, LS=5. (with throttle at full close).
I did not have time to dial it in any further on the bench. I hope to actually get some flying time soon and I will also try a 24"x8" prop to see if she makes any better torque for the vertical up lines.