You know, I have seen other type of manual transmissions, and most have a solid mounted TOB. Ours is pretty loose, as it's not a tight fit on the input shaft..I do believe the fingers on the pressure plate being uneven causes the TOB to wobble a bit, as this makes sense, because when you put a little pressure on the clutch, the noise goes away. As for the screetching noise, still dont know what it is. Could be the TOB..I had replaced my clutch and the TOB at the same time, so not sure exactly what it was..