Hi Dave
After reading many of the contribution on RC Universe, I made up my mind on a YS 110 for my Super Chipmunk. What I would like to know is the run in procedure. 20 Minutes of fuel followed by 10 flightsrunning rich. This is my first 4 stroke motor. I have 20 20 Byron fuel in mind and a APC 14 x 10 prop up front. Should I remove the cowl when running in ? Any advise would be most welcome.
Thanks to RC Universe.com for a great forum to get advice and assistance.

Mike