I think I might get a pair of those 5 dollar baffles just because they are so cheap and give them a try. One of the neighbors I was worried about bothering has a garage full of Harley Chopper type bikes so now that I think about it a little bit, I think I worry too much.
On another note, my little Honda seems to run better each day I ride it. For the past week I've taken it out each day for about a five mile ride. I've adjusted the cam chain and the carb, greased everything called for by the manual, tightened any rattles and replaced one 50 year old innertube that blew out on me at about 25 mph. The only thing I did to the engine when I swapped out the crankshaft/bearings/rods was new seals and rings. The first day or two it was running kind of crappy, no power, having to shift down on any incline. Here is a link while is was still running crappy.
http://www.youtube.com/watch?v=dtLvVZ8Hcp0
But after a week of attention and a few miles on it it seems to have a lot more power and it will even sit there and idle without stalling.