NOVAYUSA Radiowave Compact Wraparound Pitts Muffler for DA50 / DLE55 / GP50R CRRCpro RC Gas Engine

I have been having allot of problems with my DLE 55 exhausts, one or two runs and the Pitts mufflers and they either break or get loose(this one broke at the throat to the can), makes for a short day at the field. I thought this muffler might get it done as I did with J-Tec and a few others, the price is definitely right. I believe it's probably some thing to do with the engine/mounting surface that causes the problems. I'm trying the stock muffler and some high temp thread locker and gasket sealant with heat tape on the cowl... If this doesn't work I'm changing the engine out..