Is it anew speaker? Some oil based paints do take a long time to dry, but if it's a few years old, it shouild be dry by now. If they are new, I would complain to whoever you bought them from. Most industrial painters use hoigh solids quick drying paints like catalyzed polyurethanes, epoxies or polyesters, which should be dry before they leave the factory. If not, it indicates they were not mixed properly, and may never dry, or take months or years. If they are old, maybe they have been waxed, and with the warm weather, the built up wax is melting and getting sticky. (My parent's wooden rocking chair did this every summer when I was a kid). Sorry all I have is questions rather than answers, but maybe this will help start the answer process.
