Thank you everyone on your input. Now I have some direction to go and will give some of these things a try before I spend too much money to have it done professionally. I shall report back on what works and what doesn't
All the extra money I spent on a "good charcoal one" got me was additional air restriction and a shorter change interval. I still smelled oil burners, coal rollers, and dead skunks. Pretty worthless if you ask me - which you didn't. 8-{D>