RE: YS 110 for repair
PMR
Sorry for your loss, I know exactly how you feel. Around the tenth flight on my Explorer V90 it rolled over and went straight in from 200 ft at 3/4 throttle. The plane, receiver, engine(Saito 100), and three of five servos were a total loss. It didn't leave much to take home.
I sent my YS 140s to YS Performance in Nevada. Great service and quick turn around. You can ask Dave Shadel in the YS engine forum for his opinion.
DEG