last night i shimmed the charger up so it was tight like 45in lbs went and drove the car never really felt any diffrence and i took the belt off and i could just hold the impeller and spin the pulley so i tryed shimming it tighter and same problem??someone please help also it kinda sounds like a bad p/s pump and the head unit is kinda notchy when turning it over when i have it shimmed by the way this is a sn-89