A quick question here. I upgraded the 89' Burb to the 4core radiator swap (454 shroud) and now the fan blades are about a 1/4 inch from the shroud. So, my question is, if I put a 1" spacer on the clutch fan to get it tucked nice and neat inside the shroud will that cause any problmes with the thermal clutch? The spacer is made of allum. I wouldn't think so but I just wanted to be sure. Thanks for any help!