Knurling the pistons to get a nicer fit is not a bad idea, at all. I don't know who, if anybody, in my neck of the woods, who would have one of these tools... Exactly what is the pattern that the knurler puts on the piston? Since this is a "old skool" tool and we are working on engines from the same era and if a person had a nice set of pistons that are not quite as nice a fit as would be desired, this would be a really good way to have a solution. Since I am going with a unreasonable oversize and have to make my own pistons to suit and once they are done, they go to Calico for Teflon coating along with anything else that moves, knurling is kinda pointless in this case. Never the less, a good solution! Alleycat
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