Mellotronists

Well, I'm onto the spillbox with 1407.  Along with fabricating new 
brackets for the bottom, I'm wondering if there's a prescribed method of 
cleaning the big felt pad at the front of the spillbox where the tape 
enters?  The piece on 1407 is pretty dirty, and I'm not sure what the 
best method would be - maybe purchase a new piece?  Is it safe to assume 
that wiping down the box itself with a damp (water) rag is ok - it looks 
to be finished in some kind of light varnish or shellac.

On a different note, I've noticed after reassembling the keyboard that I 
have a couple of notes that stick when depressed.  The best solution 
I've found so far is to switch the pinch roller assembly out with other 
keys, so they attach differently to the frame - this has gotten one key 
unstuck (they're both black keys) and I'm still switching out the other 
hoping to find the right pinch roller assembly for it. I had the keys 
off the frame for about a week - is it possible that some of them might 
warp during that time?

john