I wish you were closer to Indianapolis. Not being a two-stroke guy, I'm not sure what I'm dealing with on my 582. What prop are you running? I can only get mine up to about 5500rpm. I'm running a Warpdrive with about 11 degrees at the tip. Can you share some specs?
Not trusting the tach, I bought a TinyTach but I'm not sure I have it at the correct setting. I'll call the manufacturer tomorrow and ask. But in the mean time, I blew all the dirt out of the barn tonight! Just at idle though, wanted to make sure it was working....