Hello I have a slantfin boiler with all cast iron rads, and a circulator pump. Recently, I reno-ed my basement and added 2 rads. After many questions I was told that Stelrad rads would work with the cast iron ones. So that brings me to they don't put as much heat out as they should be. I went back to the location where I purchased them....they suggested I add a circulator to the rad????? Is this right... and what should I do as I spent alot of money on the two. Any help would be appreciated.

Have an old Amer. Stand. oil burner and boiler. Had it cleaned and serviced 2 weeks ago; lots of buildup on heat exchanger. Guy did a thorough job of cleaning and new cement packing on access panel; however, right after job completed, began to get odor of incomplete combustion, not overwhelming but certainly detectable esp. to the wife. Serviceman came back a week later to readjust and said that odor may be coming from burning of fine particulates dislodged during cleaning and/or weak transformer, although later seemed to fire just fine on repeated manual starts. Fuel injector nozzle has been replaced and flu barometric readjusted. Despite a strong draft, I still pick up faint odor standing over boiler beside barometric flap and there is still odor when you enter basement. Doesn't seem to be any delayed firing. Any suggestions would be appreciated. Thanks.