Bit more progress done today while I wait for new parts. HUGE thanks to Josh for helping me clean and re-solder the Vanos actuators.
Vanos hubs and spring plate diaphragms removed but not before the upper chain cover comes off, there is a real b@stard of a bolt to get to, you can only turn it one flat at a time with a ring spanner, patience level 100 unlocked.
The spring plates changed after 9/2001, these were made thicker, and the concaved plate is intalled back to front compared to the old style. This apparently helps significantly with vanos rattle, we'll see.