[SBSerpent]

Carrying that thought a little further. When I placed the old N&S back into the fuel bowl, it just dropped right in up to the threaded portion with no resistance from the O-ring. Based on the recommendation of using a lubricant around the O-ring, I would think that the N&S assembly shouldn't just 'fall in' to the hole but rather needs to be pushed in due to the resistance from the O-ring. Shouldn't that be the case? If my old N&S just drops in, does that indicate a bad O-ring?