Hi Bob, sorry I could not be of more help, just finished my working days so back to Siadwell,
Got the same letter from Chester Machines, will go and have a look what's going, might get a 4 jaw or a back plate.
Siadwell is coming along slowly, planking is very time consuming, having to steam every plank and bend in the jig, this last batch of planks are very brittle and snap very easy.
The inflatable raft looks great, some very nice detail work,
Ralph.