Speedy sleeves suck. Here's the fix for a grooved crankshaft pulley. Simply get the oil seal for the opposite generation of truck. For example, if you have a 79-83 truck get the 84+ front main seal. The seals have the same OD and ID, but they are different thicknesses. Works like a charm. It's the same principle as not driving in the seal all the way, but by using the different seal you can go ahead and seat it all the way assuring that it is square. Simply go to your local parts counter and have them pull out a seal for a 1981 22R and then the seal for a 1988 22R. You'll see that they are identical OD and ID, but the early one is thicker. By running a different year seal you will effectively move the sealing lips to a new position on the crankshaft pulley snout.