Hi Jerry,
Just a few stats for you : 1970 - East German GP Ake Johansen overall, 1971 Ake Johansen 2-1 overall, British GP Farleigh Castle, Ake Johansen 1-2 overall GP Winner, German GP Bilstein 18/7 Adolf Weil Maico 1-2 overall winner, Luxenberg GP 8/8 Ake Johansen 2-1 overall GP winner. 1973 Willy Bauer, Chech GP Maico 1-1 overall GP winner, US GP Carlsbad Willy Bauer Maico GP winner, thats only the 500cc class, not sure about 250's but I dare say they might have squeezed 1 or 2 GP's out, not bad on basically a production bike with a few factory go fast pieces against 1 off hand built unobtainable works bikes.
Regards Ken Baker