Hi Kevin
I know EXACTLY what you are talking about, I had the very same thing happen with kitchen cabinet doors that I put a coat of poly on. It never did dry right depsite thorough mixing. After four days in a hot/dry environment (central California, no humidity issues) I put on a second coat again fully mixed. I believe it was Minwax brand. Anyway, it stayed sticky until I put a coat of paint over it.
Any chance to strip the stuff off and restart? Unless this is a super uber base, I would be tempted to toss it, perhaps get a different stain, thorougly mix and start over. A third coat may not set either since the second coat may affect it, especially if the solvent is not properly dispersed from that coat. The groundwork may mix but I'm guessing this is now a mix of gloss and semi gloss which reall does not look that great, plus the fingerprints around the edges.....
David
Build to please yourself, and don't worry about what others think!
TI 4019 Jolly Roger Squadron, 501st Legion