59A flathead timing

[quickchangeV8]

Running no choke. Strombergs have # 41 jets and the stock power valves. Carbs were set up by Charlie NY and were installed. with no changes to them. The car runs fine when warmed up and have gone to many shows. I put in Marvel Mystery Oil every other fill up to keep everything running smoothly. Engine runs at a constant 190 degrees when driving. Can't seem to figure out this gasoline smell in the cab and the backfiring at times.