Update on the part number for the alloy stanchion bases fitted as standard to the Snotty.
The company that makes the bases has changed hands and now belongs to Pro Boat rather than Jack Holt.
As a result the previous part number of JHYS7157B has changed in many dealers web sites to YS7157B.
I needed to get one recently and found them to be rarer than hen’s teeth. I have had to wait about a month to get one. Holding a spare might be a good idea!
I found that if you googled the part number there are a number of places which sell them over the internet.
There is a similar base JHYS7157A or YS7157A that has exactly the same dimensions but does not have the flying buttress of the “B” version. If you do not need this feature to attach blocks etc. they appear more substantial as they have a thicker socket for the stanchion.