One more adjustment
Near the gas solenoid on mine, there is a slotted screw that adjusts the gas flow. This is in addition to the solenoid and the screw is close to the base of the solenoid. If this screw is turned too far, the burner will either not light or the flame will be very weak if it does light.
When I replaced the cooling unit in mine, the screw somehow got turned too far to cut down the gas flow. I had a flame, but it was a weak flame. A little adjustment to that screw was all that was needed.
John W. Irwin
2005 Classic 28 "Sabre-Dog III"
2013 Silverado 2500HD Duramax/Allison LTZ
WBCCI #9632, TAC TX-10