HSP white is pretty much same rates as Poo blue, your probably engaging around 4500-4600 rpm now? I wouldn't go much lower than 4200, it may bog with that longer track. just my .02
also did your clutch have to be reshimmed to run the HSP weights? they are notched aren't they?
also did your clutch have to be reshimmed to run the HSP weights? they are notched aren't they?