RE: How well did your YS run after sending it in for service?
My .91AC just came back from YS after about 10 years of me fiddling around trying to make it run right and failing, mostly because "who needs to read the directions when it's new" syndrome. I guess those backfires when I tried to crank it at idle throtttle and no tank pressure blew out the gaskets (head, cylinder, backplate and airbox). I can't remember in all that time ever landing with a running engine, but after reinstalling it and flying Sunday all I can say is WOW! Consistent 1800rpm idle 8800 with a 14x12APC. Now I love it as much as I do my .63 I've had for several years, and hope my 140 sport and 140 DZ are just as good.
Thanks YS guys!!!
Roy Aultman