Is it in my mind? Possibly? All I know is I changed the plug from a cr7 to a cr8 and tried to simulate the previous ride ride out, main roads, green lanes and town riding... All I can say.. For me... Is the bike just seemed happier, not as difficult to slow ride, I had it gears I wouldn't normally and accelerated, it pulled smoothly... A vast improvement. The motor cycle shop in Sheffield said i got it from them serviced, although the plug i took out was not new? Perhaps a new cr7 would have done the same or I am just getting used to the bike? I know this reply is vague? But you know when something feels different.. For the better, that's how it feels.... Tony