Thanks alot , no it wasn't the sky just the soil ,terrain and the fence .
I didn't look it up but I would have a race report somewhere in my magazine collection.
Big Jaak Van Velthovens trick swingarm threw me off on the year.Its an aluminium painted red .
#3 I believe is Van Den Broeck but could be Dainel Pean.#17 is Hakan ANDERSSON(1973 250 cHAMP) on the Husky.
#5 is Vromans .Schmidt and Wolsink behind DeCoster.
Not Sure about #25 maybe Malherbe on the other KTM .MAKE THE NEXT ONE HARDER