Rpm and top speed loss after changing reeds?

[spareparts]

First thing to do is go back and double check your work. Look for air leaks(spray carb cleaner while the engine is running). Check compression and spark. Look thru the intake with a light to make sure all the reeds are in good shape. You're worn out factory reeds may have been flowing more air than the new "performance reeds", We had a set of old worn out champ boat reeds that made more rpm than anything else we tried. As good as they ran, they started to crack and we threw them away before it caused engine damage. I rarely find any gains from using performance reeds on stock engines. What shaoe were you're reed blocks in? were they rubber coated?