Two questions (170 engine)

Thanks,for your help, guys. Looks like maybe we'll have a couple of nice, dry days ahead. I'll do some experimenting and see what happens. As for that droning sound, it sounds and feels like it occurs foreward at the exhaust manifold or the junction to the exhaust pipe. The manifold and pipes are original, and the new muffler is a stock-like quiet design.

-Dan