Here we go Adey.
Slipper plates: 30mm x M8 Penny/repair washers
Centres: M4 brass or steel nuts.
M4 nuts are 8.1mm across the points.
Run a 4mm drill bit through the M4 nuts.
Carefully open out the 30mm washers so that the M4 nut just fits in.
Use a good quality epoxy resin for the brass nuts or find someone who's
good with a MIG welder for the steel ones.
Finally,file a slot on the back of one nut to take the top shaft's drive pin.
There you go,slipper plates for your Cobra.
Mark
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