ORIGINAL: jerryjohnson
OS 56 ATX. This engine is new, 6 or 8 flights and I have trouble with the stock muffler coming loose. I have tried thread lock, but it seems to give way to the heat. Any suggestions of what to use on the muffler bolt threads?
Do you mean the O.S. Max .55 AX or the O.S. FS-a56? O.S. doesn't have a ".56 ATX" engine.