I agree with Rick (and you can take his opinions to the bank - he KNOWS his stuff!). I've used Jasco semi-paste paint stripper a few times. It isn't as effective on varnish as it is on paint, but still gets the job done with little or no damage to the finish underneath and none to the inspection stamps, as long as you don't use anything "offensive" like heavy steel wool.
"We make men without chests and expect from them virtue and enterprise. We laugh at honor and are shocked to find traitors in our midst."
--C.S. Lewis