The best way is to just whip em off and give all of 'em a good blow!!!!!????? The balancing will not be effected. This is quite easy to do and a quick way of finding out if it helps or not! Might be worth using a good filter in the fuel line to eliminate rust & dirt contamination. This can be a big ...

A)Pretty sure you can discount electrics.... they usually breakdown under load, and as runs nice with WOT, must be OK. (Wide Open Throttle)! B) When cruising at 70mph, throttle will probably be open 1/4?? or 1/4 - 1/2??? Sound like a blocked pilot jet? C) If running good on more open throttle, main ...

Try this, Copy and paste:
http://www.motocross.com/motoprof/moto/mcycle/carb101/carb101.html

You should be able to isolate part of carbs causing problems?

Hello Doony,.. if she runs better with choke out, must be running weak. You can remove float bowls, check jets & float heights and do a visual on needle wear etc without disturbing slide/balancing. Was bike ok before carb balancing? Assuming float heights are OK,run at 68mph+ try holding on minimum ...