In a normal jumble time, Ron, damaged fuel taps are around. People don't bother to put them on eBay though. I only have 1/4" Norton stuff so I can't help.
I spent a good 45 minutes, rummaging and checking threads and came up with four of the lower 1/8th Enots fittings.....(Some variations). I would sell them as a lot for £20 +£3 post. Ron