I think the only adjustment is to move things around a bit. The weak flame is a good point to check. When the main burner valve opens there will be a "puff" as the gas starts flowing. If the pilot flame is weak it could get blown out before igniting the gas.
I'd monkey around with it before hauling it to the dealer - I don't like anyone else working on my cars either. That's just me tho.
2013 F-350 CC SB 2WD 6.7PS
2013 Eagle Premier 351 RLTS
-SOLD- 2012 X23B
-SOLD- 2003 Ford Expedition 5.4, Bilstein shocks