Rough running at high rpm after 200hr service

Thanks, I was hoping for a magical answer that didnt involve pulling both carbs off and repeating the cleaning/inspection :)  Makes total sense though. 

The thing I am struggling to make sense of is the fact that it ran fine for 45 minutes before the problem showed up.

After numerous full power static runups it now runs smoothly but only can get up to 4300rpm. Im starting to wonder if I have a debris clog somewhere. 

Jim Isaacs wrote:

Are those carb mount flange clamps tight, and the carbs firmly seated?

I will check, that is a definite possibility. As part of this 200hr service I replaced the rubber boot as part of my upcoming 5yr rubber replacement so that could be the problem.