<p>Thank you Mr. Odess. That's a point well taken, and I expect that any bit of rubber 45-odd years old would be far outside it's expiration date.<br>
Now the question is where to find an updated brake assembly? My first impulse is to find a dead donor 500 C/M but I've been down that road before with Nikon SLR's and have a closet full of reported dead but easily revived cameras and still no donor part.<br>
If only they were like kidneys where you could take one and still have one left.....<br>
(you have a neat website, by the way, and I wish my doctor had as good a reputation)</p>