Parts manual for Sprint
Rimmers list the specs for the setscrew codes in the manual. I wouldn't use them myself, you can often just type the specs into ebay and get them cheaper.
Mine was just fitted with some generic 1/4 inch thread self tapers and clips I found in homebase. The correct clip is 1/4 Valance clip, apparently.
As for the rest, no idea I am afraid, sure somebody will know. PTFE tape comes to mind for the leaking oil switch, but I suspect the oil might eat it, certainly isn't petrol friendly.