guys check this out, I bought a new xoar prop, I took my time and balanced it properly, I bought a new NGK spark plug and put in the engine. Now it seems like the motor lugs down when I run it. Before I had the factory plug and was running a Pro Zinger prop and it was powerful. I have the oil mixed at 32:1. Why in the world would it all off a sudden do this? I thought buying a better prop and plug was going to help. I have a lil over one gallon through it, I know its still in the break in stage, but what im concerned about is, it wasnt running like this with the other stuff. Yall have any ideas?