my car starter is barely turning the engine over,when it does start the engine revs rise rapidly whilst driving as if the clutch is slipping,my local mechanic says I have to replace the dual mass fly wheel,clutch assembly and slave cylinder as well as the starter motor,i am a bit wary as I have just spent,£3200 getting injectors tank and diesel pump fitted and don,t really want to spend more than I have to.can anyone advise?