Bought mine as NOS a few years ago. I drove my truck to work this morning and again I'm getting occasional burnt wax type smells. No visible smoke but it's like dropping a drop of wax on a super hot skillet.
I'm thinking a solenoid is leaking by. I have also had a couple miss fires where the heater would not fire off. After letting the gas smell go away it will usually fire on the next attempt or so. Do any of you gas fired heater owners experience this? Anybody have any comments? Does the ignitor shellac up requiring cleaning?