So, I got a new spreader bottle screw and started mast setup this afternoon.
I went through all the steps 3 or 4 times. By the time I finished rake and rig tension were within tolerance and the pivot pin is loose, but I only have about 8-10mm of pre-bend.
I’ve been cranking back the spreaders to try and get the required 25mm-38mm of pre-bend on. They really are way beyond where they should be in an effort to induce bend (see pic below).
The next step? I could keep moving the spreaders back, but really I think I have to take ‘that mast chock thing’ (see pic post 2) out and support the mast from the sides only to allow the mast some room to bend forwards.