Wishful thinking regarding a skip

[rugguy]

Situation:

Took bike to Colorado and let it sit for two months without riding. Wouldn't start and had fuel pouring from overflows. Trailered bike back to sunny south. Tore down carbs and gave a good cleaning. Jets cleaned and open, floats loose and moving. New plugs, fuel, oil, filter, blah,blah, blah. Reassembled...it started and ran great but had fuel leaks.

Tore carbs back down and replaced all gaskets and fuel rail "o" rings (thanks redeye). Cranked great and no fuel leaks.

Now I have a skip in one of the cylinders. I can only hear and feel it at idle, but it's there. Checked all vacuum lines, plugs and wires and everything seems to be ok. I cranked the bike and let it idle and pulled each plug wire loose looking to see which cylinder did NOT cause a reduction in idle. But none did....very weird. If I have a skip, when I pull ONE of the plugs ONE of them should be the culprit. Right???

I am going to run two full tanks of fuel with Seafoam through her to see what happens (that's more fun than tearing her down anyway). That's where the "wishful thinking" comes in. Does that ever really work? Any ideas on what else I should check for?

As always, any and all help is appreciated. As long as it doesn't include, "take it to the stealership".

Thanks.

[signart]

That sounds like a spark plug or other electrical, but could be a vacuum problem. Does'nt sound like a fuel problem here.  If you removed those covers off the vacuum pistons, make sure they were put back correctly. They are easy to misalign and are damaged very easily.
Better help will be on the way.

[Ricky-D]

To eliminate any engine reasons, performing a compression test would be indicated.

***

[rugguy]

Roger that on the compression test. But it is as smooth as a baby's butt on throttle up. But good advice I well take.

[da prez]

  Hook up five  vacuum gages and check. Before that , with engine running , if you can get ether with a spray nozzle , just a whiff at the intake base at the engine.
  If the rpm steps up , you have a vacuum leak at the base o-ring. D O  N O T over do the ether. W-D 40 will work , but it is messier.
  It is also possible the vacuum lines are bad.  I just de-smogged my Valk ,and the lines were gummy. You can use the ether trick on the vacuum lines also.

                       da prez