I recently got the .26 glow engine NIB on auction and have some questions:

1) The muffler is quite small. Morris sells a quiet muffler, and Carlson has a pipe (mvvs302) for a 3.5, which this is close to. But in another thread I read about a 3243 pipe that is designed for larger props. I'm hoping to use a 10x4 if possible, or maybe a Bolly 9.5x5. I assume the quiet muffler will give the lowest noise and the pipe will give the most power. Can someone tell me any more to help me compare these choices? And if the pipe would be best, where does a U.S. buyer like me get one?

2) The English instructions with mine were pretty sketchy. I gather this is ABC, so break-in at a slightly rich 2 cycle? It recommends 100% castor for lube. It's a little hard to get, but I can get half castor half synth. Good enough?

Thanks in advance,
Jim