Thanks for the input. on the diagram I can see the part 221.333 does this move up and down as you turn the screw? If it does it must be fixed to the flap in some way? I can’t see any brackets or fixings that this part fixes to. It may be the bits that are missing were removed to fit the 4 speed gear selector mechanism. As the dash is out at the moment I’ll take a photo later and post it, that may help to identify what’s missing.
Yours steve I