what type of chimney do you have? i know that single wall stove pipe is very
bad at building up. due to temperature variance from the outside wall to inside
wall. insulated pipe works the best, but is expensive. actually, here in northern nevada you must run insul. pipe outside. single wall can only be used
inside with proper clearences. like everyone has said though, well seasoned
wood is the key, no matter what species. i also have a practice of burning wide open at least twice a day for 15-20 min. to help keep pipe clean.