Anyone ever clean there chimney on a central boiler? I have 3 sections of pipe and it's really to high to clean from the top. I think i've got some creosote build up that is slowing my draft. Is the back cap that's at the bottom of the pipe a clean out where you may possibly be able to run a brush up the pipe? Who just lets a fire rip up the pipe to clear it? That would be the easiest way. My wood is on the greener side but it's all I have now so I have to make do.