Q: In troubleshooting an intermittent RPM dependent engine roughness for a friend’s O-360, I came across this General Aviation News column of yours from 2008.
I own a 1979 Warrior II with an O-320-D3G and am also curious whether Service Instruction 1294 would apply to my engine.
Lycoming does not have this SI (or SB) in its technical document collection. Google has also been unsuccessful in locating a copy. Do you have access to this Service Instruction?