well after using my uds a fair amount of times ive decided it is time for some mods. well really more fixes then anything. first i'm going to drill the holes for my pipe nipples a little bigger so i can put a larger pipe in and get a tighter fit. currently the holes are drilled slightly to big for my 3.4in pipe nipples and the permatex i had on it didnt hold up with screwing the caps on and off. so this time ill get the pipe to fit very tight. also im replacing the black steel with stainless steel so the vents wont rust. im also planning on cutting the rim off of my drum so the dome lid fits better. i may put some oven gasket or high temp silicon on it too. just to seal it up even more. i think with all this my temps will hold much better. any other ideas or advise would be much appreciated! ill post pics in a few days when i get done.