I finally got around to tinkering with my Mb again.. made a chain tensioner bracket simmilar to what 2door has except mine is bolted to the chainstays with 6mm bolts, and it uses a TSC tensioner, just without the spring.... the rear sprocket is a rag joint sprocket but it's running completly true and it's tight... problem comes with tension on the chain.. it will start to jump teeth and ride ontop them if it's got tension on it.. let the tension off and it tracks perfectly... any idea's?