got a heater on roadside..#$50..was sittin for quite a few years.took carb apart and cleaned.stated with straight kero..worked great..then a blend,even with some n0.2 in there,but when i went to straight bd it started to run with less intensity.still burned but alot less heat.plan on looking at carb tomorrow but any sigeestions out there...also,anybody got a manual for one of these..there is some kind of thermocouple going to a control on carb that i would like to know what it is....thanks.....willy

Read through THIS discussion, he indicates his biodiesel rated stove has somewhat larger orifice fuel flow dontrol openings for the thicker biodiesel, sounds reasonable to me.