Details to convert pressed piston pin to full-floating?

pishta said

the holes I have seen were countersunk, like a funnel. If you want to run press fit pistons on floater pins with no circlip grooves, you can run teflon pin buttons, VWs run them often. they are just teflon pucks that sit outboard of the pins against the cylinder wall. I guess they dont wear the bores being soft high temp teflon. Any one ever use them in a Water cooled V8? I have a press pin stroker set and was contemplating running them like this on floaters, just too easy to take apart and service.

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If you read around, there is some writing about them wearing/scoring the bores on the sides. Perhaps carbon crud gets embedded in the surfaces and acts as an abrasive.
I am looking at the same thing: press fit pins on floater rods. I have been considering a small set screw from the underside with red Locktite, and perhaps a matching groove in the piston for it to lock into. The pin does not seem to take a lot to hold it in place. I've been wondering what problems (and thus disasters) might come from that approach.