The sleeves aren't the expensive part as you just stated, however it is the TIME to do it right. It takes more than 2 hours per hole to sleeve and FINISH hone/resurface the block if needed CORRECTLY. You must work for minimum wage YR or have some super fast , Star Trek tech machinery which I highly doubt. $125 for the first hole and your'e already losing money--$50 for every one after that and you're claiming bankruptcy. It's just a matter of time. Actually disregard what I just wrote. Can I send you a couple of blocks ? I need 8 sleeves in each-you can even supply the sleeves. J.Rob