Let'sgoflying!
Touchdown! Greaser!
So they have worked through a few problems but now this new 15.5hp 4stroke Briggs and Stratton is not making rated rpm. Apparently it is 150 low, and cannot be adjusted upwards, even with the governor. The dealer called B+S and was told it's the altitude (we are at 5000'). Does this explanation seem plausible assuming the mixture has been correctly leaned for the thinner air? I would not expect that with an a/c engine which is similar. Honestly the rpm loss is not as concerning as 'what else will go wrong with this engine' in the future.