Return spring for what piston? It's not the clutch one, what else can it be??
Oh yes, and I sorted the idle problem out today.
It took me about six iterations of carbs off, carbs on and ride around with no right tank on but I sorted it. Thanks to my dad back in the UK for his recommendations during the 'pulling my hair out stages', he's the man and I know he reads these threads......thanks Dad! Got it down to 15 mins to remove the carbs, make the changes and slot them back on.
Only small issue I have is at 9250rpm I get a little hesitation before the limiter kicks in. I ask you all, does the engine have a progressive soft-cut rev limiter that starts at 9250 and stops revs beyond 9500?? Or it is aissue that the dyno will resolve? Dyno in a few weeks, going to enjoy it for a bit first!!
Going to ride ride ride now