I was sort of involved in correspondence with Chuck regarding his T&C but after an exhaustive search--HERE- the relevant photos were removed.
It is probably worth USA people to be a little crafty and buy the new Mk3 details from Heningwayskits in the UK but the Mk2 castings from Martin's Models in the USA.
Subject to correction, it would seem that the Mark2 castings etc can be machined as Mark3 ones.
OK, the vertical pillar machined with the spiral may not be available but desirable as it is, it isn't vital to the operations.
Again, the new construction articles are an improvement- because most people now have mills which certainly wasn't so when Chaddock wrote his Model Engineer articles and later his book.
Frank;y as I wrote elsewhere here, I would look seriously at Guy Lautard in Canada's vastltly expanded version poof the Tinker.
The tinker simply uses the cheap double ended grinder whereas it is quite an effort to make the Quorn spindle.
My opinions, of course
Norman