Simon.
Sorry, I forgot that there was an inset on the banjo, also on my SU pump. The M16 dowtys are too tight, they will screw onto the thread but I fear the rubber is being damaged, and as you say the O/D is too large because of the insert. Glad you have sorted it.
Anyhow you have made me look at my unions as I have had a petrol smell. They tightened up a little, so hopefully sorted as well.
Sorry, I forgot that there was an inset on the banjo, also on my SU pump. The M16 dowtys are too tight, they will screw onto the thread but I fear the rubber is being damaged, and as you say the O/D is too large because of the insert. Glad you have sorted it.
Anyhow you have made me look at my unions as I have had a petrol smell. They tightened up a little, so hopefully sorted as well.
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