I've read other posts on this forum dealing with various Fuji engines breaking. Like you silver cloud, I have never had any trouble with a Zenoah I own. By the way I was told by Hobby Services that the crankcase crack was my fault because I had ran the engine hot or lean at some point but they would sell me a new one for a "special" price or I could pay a $15 "non-warranty inspection charge" and they would send it back even though it is still under warranty.

Scott