I think if you refer to the acu classic rules it clearly states that the bike must have been originally manufactured (sp) with twinshocks. If not then the bike should be out. I think this is sensible as the argument on this particular bike is more grey because of its age. An approach along the lines of would it be fair as stated above if I weld on two shocks on my evo and compete in that class that would patently be against the spirit of it.So its wrong as you can't draw a fair line with adding two shocks.
I think the cost of the yamaha engines may have been a part of their financial troubles. The little four stroke is not a trials engine but has its uses.
Funny thing is and I wonder who is right but over here very few mess with jets and slides yet in the states its almost the opposite? Is this because thats the normal thing with MX's? Occasionally pilot jets but slides hardly ever.
Go back to basics, new plug spotless filter, strip and rebuild carb, q/a throttle super smooth little or no free play, then mess with pilotscrew and airscrew then pilot jets
The evo hasn't had any electrical problems has it? Never seen one catch fire either. Certainly the fuel spillage doesn't happen with a re route of the breather which has been done on the later bikes I believe.
Would that be The don smith who won the european championship? And at a time when brakes were not that good generally? How many ssdt sections go down hill? Thought so.