Secondly, I found that even with the string saddles wound right down, the B, E and A strings are still pretty high, so maybe I need shorter blocks or to get a few of them shaved down a touch.
You might try a shim on the neck--several of the Wals I've owned had shims that looked like they were installed at the shop during the initial setup process, so they are very common, and it's much less permanent than filing the saddles!
And lastly, I'm not sure if any of the pickup pole-pieces are adjustable anymore, some of them are rusty and most don't appear to have been moved for many years. Not sure whether I have exactly the right size allen-key for them, so will try a few more before I make a mess of any of them.
As you might guess, polepiece adjustments are not the sort of thing that's done with any frequency, so it's not uncommon for them to be a bit stiff even without rust.
The polepieces, bridge saddles, intonation screws, and control knobs should all take the same size allen key, which was originally supplied with all Wals. I'm pretty sure the size should be 1/16".
Mike

