they should have offered to at least replace the broken parts less the engine, that is not like great planes i have only good things to say about them. if this is the way they are getting i will not buy anymore products from them. regardless of what engine you install within reason they at least should have some sort of disclaimer saying warranty void if this weight/size engine is used. they have replaced broken parts for me sight unseen from phone calls in the past. that fix is not a hard one you should have it ready and running in no time good luck.