i have a question for all you C-4 people,I just got in mine today,and after i started it up i heard a squeal that sounded as if it was comeing from the belt tension unit.I was woundering if this a rebuild item,ie bearins in the idler pulley ,or is this a unit that has to be replaced altogether?I would be interested to hear from anybody whos had this problem,so i can trouble shoot it.:lookinup: :buhbye: :thumbsup: ken,and as allways save that wave.