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Message: <blockquote data-quote="jammess" data-source="post: 1317710" data-attributes="member: 89387">Hi FNG, that's good advice.  Maybe just run a bottle of Techron thru it and call it good.For me this is my first multi-cylinder machine after many years on beemers beginning with a new '77 R75.  Plan to fetch my nearly new 2010 FJR next weekend so for me going from a flat twin to a multi I doubt if I would notice vibration anyway.  Maybe in a few months in which case I'll maybe give your sync method a try but for now there is much I'm going to have to get used to.  I'm really looking forward to getting aquatinted with this fine motorcycle.I know on an oilhead it is a no no to tweek the TB stop screws but there are those of us that have done it.  With only two TBs you sync just above idle by adjusting the throttle cables (one for each TB) which is kind of the same as adjusting each throttle plate on a multi. On the oilhead the throttle stop screws are the ones adjusted on the flow bench and are not to be touched or there goes the warrantee.I use a sync tool called a Harmonizer which has only two ports but is just about as good a tool for carb or TB sync that i have seen.  The guy that makes the Harmonizer is in the process of developing a 4 channel tool which would be great for one of these multis.  Look on the advrider forum under venders to find the Harmonizer.</blockquote>