Does this make sence to anyone?

I had a bad vibration problem in my corona, I noticed that the tracking was off, but it was off very, very little, I did not even think the tracking was off enough to make a difference, But since I could not find any other cause for the vibration I decided to try to fix the tracking to see if that would cure the vibration problem. Since fixing the tracking is pretty much a trial and error procedure, when I shortened one link and lengthened the other, as luck would have it I made the tracking problem worse, but here's the kicker, Now the tracking is off even more, but that vibration problem that I could not get rid of for months is NOW GONE! Id rather have bad tracking with no vibration, at least it won't rattle my heli apart!

P.S.
when adusting for tracking, If I noticed one blade is tracking higher than the other blade and I want to decrease the pitch of the blade that runs high, HOW DO I KNOW WHICH LINK CONTROLS THE BLADE THAT RUNS HIGH ?????? It would make thing a lot easeir!
Also, to decrease the pitch of a blade, do you shorten the link ??????????