Im not saying that they have any more work done, what i am saying with the hand matching that they will sit there with say 100 pistons and 100 liners and they will match each piston and liner to get the best fitting ones. That is why sometimes you will jag and absolute rocket and the rest are all about the same. I had the same case with a tourer engine a few years ago. It was a missile, could run down a factory Sirio drivers engine on the striaght.