To my disappointment, I broke down a long way from home yesterday - stuck exhaust valve in 245 TTSO O-360. Was it ever stuck! It just stuck turning final at my intended destination, which turned out to be about the best place in Canada for this kind of problem! Lucky me! One long hard day of work, and some excellent help, and loan of the proper tools, and I'm on my way again.
My first "grounded" breakdown in 38 years of flying!