well i installed my new gaterback blet (6rib 93.5 in)on my 02 gt. i diffently got it right. i drove about 20 miles and i noticed when i would hit the gas i would here a clunk soundcoming from the front. then i noticed the oil gage was move back and fort just one point (it does it only idling) the car is running good and the belt is on good what can this be?