My sleeve on the crank has grooves where the seal rides for the front timing cover. It look like it mics out about .011 deep. What is my best option for this. polish it out and use it? I can have it machined at work, which it then is undersize. One of my toolmaker friends mentioned using belzona, and then turning it back smooth. Or a speedy-sleeve. I have never used one before. I think its part # skf 99187, but not sure?