Whacking the bottom of the hex screw "socket" with a thin pin punch with some penetrating oil before and after , has always done the trick for me. Repeat as required. If the screw begins to turn then binds up again, don't force it, thread it back IN again, flood with penetrating oil and repeat back and forth until it comes all the way out.
Make sure the pin punch is at the BOTTOM of the hex "inlet" of the set screw!
Also: Use good quality US made Allen wrenches, not your Harbor Freight specials!
Also: Considering goobering some grease in the hole after you put it back together , to slow down the rust process. The next owner will sing praises in your name.
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61 and 63 Originals
123 (2)
782D
106,
147, 122
102 parts
It's only original ONCE!
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