Update :
After doing a bit here and there I have finally finished the underside of the playfield .
I learned a couple of important lessons ...
1) don't do a playfield swap in Summer
2) Try and transfer harness directly from old to new playfield to minimise chances of the loom getting tangled (untangling the loom is a bitch)
I have overhauled both the steppers on the underside (one was almost seized) and installed new coil sleeves and stops and new spring kits
Tested about 15 switches so far and found about 30% not working (either out of adjustment or needing a clean) so will go through them all before installing the playfield back in the cab.
