Thanks Perce for the speedy reply . After posting I did notice it was under the Bulto/Sherco banner but I had made the post so it was to late !!!
but as to Grimbo not riding the 4t in the Scott, I was rather suprised to see him riding a 2T. I suppose it could have been a fuel usage problem and a 2T was better for stratagy. As for the starting problems, as far as I am aware they do not exist since the upgraded coil and camshaft kit came along , the coil makes it start; the cam stops the top end rattle on tickover. As for the carb options i am sure that is down to rider preferance .I cannot see why a good well sorted looked after 4T needs to be cheap as they are as good as any other trials iron.