Hi,
Got started on it this morning. The rails came out easily, through the bottom of the slot, once I disconnected the knee lever and pulled the two support blocks. The rails looked pretty grimy, and the contact surface of the belly rail and the back edge of the wrestplnk felt pretty rough. So I used progressively fine sanpaper to smooth them a bit. In the process I discovered a shim in the bass end of the gap, whose purpose, apparently, is to take up the extra millimeter of width on that end that I discovered during the initial examination. So it appears that the one-millimeter discrepancy in gap width between the treble and bass ends does not indicate narrowing of the gap due to cheek twist or anything else like that. I hope... In the process of sanding I also came upon two small protrusions from the belly rail into the gap which I sanded smooth. Those might have contributed to the rails getting stuck in place. Still trying to figure out what - if anything - to do about gap spacers. there's so little room for them... It also looks like the bushing cloth covering the slide support blocks could use a little cleaning and dusting with teflon powder - or, perhaps, replacement...
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Israel Stein RPT
P.O. Box 68141
Jerusalem, Israel 9168002
510-558-0777
istein248@gmail.com------------------------------