Thanks Kruz. This photo below was more the semi-pro level rider. There was an oil sponsor that had 'A riders' and 'B riders.' B's were given a few cases of oil. A riders were; back up the truck for unlimited cases of oil. Still using 40+yr old 50w racing in all the 14's I've gone thru, plus the bikes I've owned later when I stopped racing.
This race, I ground down the ign cover on one side and shifter arm on the other side. Sponsor came out that day, riders were around him talking and this race was to see if I would still be sponsored for a few more races. Came in 2nd that day. Ron Pierce on a Yoshi bike, Harry Klinzmann behind me. Both guys had years of racing and I'm still green doing it. Pulled one out of my ass that day.
When Freddie Spenser showed up, there began the changing of the guard where I was old enough to have been his dad at the time.
https://photos.google.com/photo/AF1QipNBXBxVe7SgQhZUK00kxlNu-3PsiShnVwgbJjh1