I'm a mere 68 in three days and looking at another 4 years till retirement.
The needed screw is a slotted flat head. A dome shaped flat spring that tensions the windage screw and provides the clicks for the knob is anchored by fitting over the head of the missing screw to keep it from turning. I do not know all the evolutionary changes that have occurred in the 48's long production life but I wouldn't be surprised to find the screw sizes changed more than once.
I miss Michael's expertise and resources.
Jerry Liles
