Diesel Fuel smell occasionaly in cab of F250 7.3L

I hope you did all the other O-rings on the fuel bowl and not just the drain valve. if not you might go through this all over again. the others are not expensive, 5 to 8 bucks for the 2 o rings and 2 selves. I paid 25 bucks for a new drain valve on line. My drain valve was not leaking, it was all the other seals and o rings, but I replaced it anyways as the new one had the proper O-rings and the ULSD would eventual make them leak.

Steve