Yeah, not impossible, but very difficult. Basically you have to shim the backplate up from the magnet which is the hard part as the magnets are super powerful. Once the backplate is shimmed, slide till the polepiece is centered (polepiece is attached to the backplate) and then remove the shims.
Getting the shims between the backplate and the magnet is the PITA.
-- 05 Mar 2012 18:43 --
I think everything has been accounted for. Stay tuned though as I have a boat load of DIY stuff for sale (not making this a sale thread, just saying). I need to pair down the steed. I'll likely have some more free stuff.
I'll go through and make some ads, but here is a thread I made before the move up here. Still have the majority of the stuff.http://www.diyaudio.com/forums/swap-mee ... odies.html