The motor on this is http://www.nrracing.com/product-p/eng-rac-212-level2.htm (Hemi , Balanced, Tuned and dynoed. Peak HP 12.29 at 5250 and Peak Tq 13.22 at 4000. 22 LB Spings. Head Milled .050) on a Trailmaster Mid XRX frame. I would like to find a replacement crank pulley that won’t do this.