I live in WNY and have always heard tons of hype about oddys. If you do some google searching you will hear some horror stories from people getting "New" motors with reconditioned and used parts in them. I think yellow bullet had a couple posts on them.
I personally have never had enough money to be able to buy one of their engines so It has never happened to me. A friend of mine had a set of heads have seats put in there after the fuel system went lean on his nitrous motor. After getting the heads back We put some parts washer fluid down each runner and they all leaked. Got the dykem out and it seems as though the heads were not level when they cut the olds ones out and installed the ones cause there was a section on each seat where the wear pattern was going above the main seat angle.