Looking to update wood controls to solid state any recommendations? Currently has electric controlled damper, with adjustable plenum sensor, and of course mercury switch room thermo stat, between all of this is a transformer, oil side is a beckett afg all upgraded I just did major work to this, replaced the oil chamber cut open furnace and installed new one piece, from IPC College Point Queens NYC, also welded up various cracks around box, installed some doubler plating and re-enforced the fire box, I have no quams about launching a stick in there now, also any suggestions on where to get metalbestos 8" pipe at best price, currently have triple wall double air gap flue finished od is about 20 " it works good just getting old.