I have been getting some mixed answers on if I should change out my rotor to a rpm rotor. What are some of the common set ups for stock buggy? I am rinning a b4.1 vtx10r/vst17.5 with the stock rotor. 35/69 for gearing, motor timming maxed, and blinkky mode on high bite clay indoor track. I seem to not have the top end of the D3's, phantoms, sonics ect.