I resined a sign (wood) with sticky vinyl letters underneath. It’s dry in some spots but not all spots – still slightly tacky in spots after 3 weeks. If I were to scrape it the letters would come off. Can I just resin over the whole thing again or should I just ditch it without scraping and sanding? I resined a coaster at the same time and it didn’t cure at all. I scraped it, sanded it, reresined it and turned out lumpy so I had to ditch it.