here's a question for those who have recently rebuilt a prop shaft. i just noticed that the rubber "webbing/bushing" around the center bearing for the prop shaft on my 86 tqw is allowing the propshaft to sag. there is 1/2 to 1 inch of play in the prop shaft movement. (this is without a pry bar - just bare handed) is this normal or am i looking at a prop shaft rebuild? tia... frank