Folks, need some good advice. 09 RK recently converted with Motor Trike. Prior to conversion, stage 1, PC V, ran excellent, smooth as glass. After conversion added SS 551 cam, swapped trans sprocket to 30 tooth. Now motor vibrates like hell. Anything above 50mph at 2.8k rpm, and gets worse the faster you go, especially 2 up. Cruising at 70 around 3.2k rpm is not fun anymore. Winding it up to 4.5k to 5k while shifting it smooths out. Have gone over the whole front end, had MT check their part, all ok. Coasting down hill at 75 at idle is smooth. Is the 96 motor too small a platform? Some say get a 103 or 107 kit. After spending this much sure it`s discouraging. Thanks