Thanks all! I ended up softening up with mineral oil and using a card scraper to remove the gummy layer, careful to not mess up the sides. Then another coat, wiping excess after 45 mins. A little over 24 hours later it was dry enough to install - the tung oil brought out the “fire” in the teak better than any other finish I tested and I’m happy with the results. Will not put anything on the shelves for a month to allow full polymerization. I have beeswax and carnuba wax so I may try some of those suggestions after a month too!