Plenty of heat but unburned coal

I like simple The Alaska I have now a gnome 40 has 3 blower motors and a feeder motor/gearbox (with no safety if it gets jammed, breaks the gears) I’ve had it since new (sold it with a house, and bought it back !) it’s a lot of work trying to keep the noise level as low as possible with 3 blowers and the feeder motors, but it does put out some nice heat and is a Direct Vent system