Well I was putting the sleeves into the block and I cannot get # 3 to go down the last 1/32. The others go down fine, but #3 hits something. I tried another sleeve but no joy, so the problem is at the #3 point. I check and cleaned everything and I cannot see what it is hitting. I am soaking an old sleeve because it was cruddy to see if the problem is in the aftermarket sleeves. I feel pretty foolish for not trying the sleeves in the block before I put the crank and seal in because this does not look good. Perhaps the block is cracked or something. The only thing I can think is there is a casting web right at that point and perhaps the sleeve is hitting that, sighed Mayday.