I'd sure check out a few other things if it's been sitting that long. Was it well oiled down before storage? Rings stuck to the bore or pistons? If it's still on the stand, flip it upside down, pull the pan and check there also. Without lube for that long, crank seals and a few others might not be good to use. Things tend to take a set after not moving for that long. Sounds like a good buy but sure check out the internals, even new.
Dave