One of the great misunderstandings in the world of woodstoves is how creosote fits into the picture. Contrary to popular belief, creosote is not an inevitable product of wood burning. Creosote forms when wood is burned incompletely, and is an indication of improper use, poor installation, or a poor wood stove design.
Some stoves seem to work just fine except when it is wet out. If this seems to be the case, pay close attention to the weather when you have smoking problems. It is easy to confuse wind-related problems with rain-related problems.