Easytiger , I understand where you are coming from on manufacturer/customer rights & responsibilities . Sometimes we lose sight of what this hobby is all about , HAVING FUN! I must admit that it does take the fun out of it when your model falls to bits for whatever reason. I think maybe one of the things a manufacturer could consider doing in this case is to put a CLEAR warning that exceeding the maximum reccomended engine size results in a case of "you're on your own". Yes people don't want to take responsibility for there own actions these days , it's sad but true! I guess at the end of the day if somebody gets some help out of what's discussed on these forums , then something has been acheived ! Still , it's sad when a nice model bites the dust unnecessarily , if healthy discussion on RCU prevents this , then all the better!