After reading hours of threads on here,i build my on uds. Awesome smoker by the way. But here my troubles, i got 3 3/4 in air inlets. 2 have ball vales,1 is capped. I can reach 225 easy but much more the 250 is a chore. Flat lid 2"in bung hole stack, basket 8"around and 12"tall. Any ideas fellas ?