My latest pipe purchase was a Blakemar extra-large pot. It is very well constructed and smokes wonderfully. The interior dimensions are just over 1" wide and around 1.5" deep. The diameter is really what's giving me just a tiny bit of trouble. I have a hard time getting the top evenly lit. I'm usually one third down with several relights before things are running smooth and burning even. Is there a technique for large bore pipes that differs from the "normal" size bowls?