I did the HS overlay. I would not do it to a restorable pf, but it turned out nice. Its not hard, because the underside of pf stays intact, and once sanded, is flat. Inserts and all. I would never use the old style overlays, but the new clear ones are a viable alternative.
Let the overlay set for a few weeks after laying down. Nylon washers below post are a good idea. Use soldering iron to clean up cuts.