I stripped, sanded and stained the piece, then used the polyurethane again making sure it was a bare skim coat. I left the piece in a room with fan and dehumidifier and had the same results, 2 days and it was still sticky. I stripped down the piece for the 3rd time, sanded, stained, waited 24 hours and used Minwax water based fast drying polyurethane with perfect results! The piece has been recoated several times and looks great. I am sure there must have been something wrong with the can of polyurethane I purchased, its in the bin to go to the chemical waste recycling. Thanks everyone for your advice.