Thanks for the info guys. I'll be in the Olathe area tomorrow. Looked @ the Midwest Propeller site. Looks like they can help me. I think I'll have them fix the one I have & get an extra one w/more pitch for faster top end. My boat is a 15 1/2 foot Tracker & top speed now is 33 mph but it's always nice to get there faster if you need to. Sounds like I may need to get a tac to see what my RPM is so I don't over rev my motor. Thanks again:D