Fork resistance not equal

[rugguy]

I have been chasing handling issues on my 2000 I/S for a few weeks. The front end seemed mushy and I was getting a fair amount of front end "turbulence" at 70 mph and above. The only way I can describe what is happening is that the "T" created by the front wheel, the forks and the handlebars, twists and rocks left to right at 70 mph and above.

Here is what I have done:

Replaced oil and dust seals on both forks (did not remove springs).
Refilled fork oil with exactly the right amount of fluid for each fork (15w because I want firmer response)
Measured  and adjusted fork lengths to be perfectly equal (they were off by 1/8")
Replaced rear shock mount bushings upper and lower
Correctly re-installed seat (middle bracket was not engaged)
Checked and adjusted proper wheel-axle-fork alignment

While replacing the fork seals and fluid I noticed that the compression resistance from each assembled fork tube was not the same. When I stood both fork tubes side-by-side vertically and pushed down on them,  one side had noticeably more resistance than the other. From my limited understanding of how suspensions work, I can't imagine that they are supposed to be like that. Although, I don't understand why the internal workings of both forks are not the same either.

Before I order progressives I would appreciate any feedback anyone might have who's experienced what I am describing. I would love to think that just replacing the springs would correct the problem.

As always, all help is greatly appreciated.

P.S. If you ever have a rear handling issue and you have ruled out tire pressure, shocks and bushings, check the seat.

[Daniel Meyer]

The forks will NOT feel the same. One dampens on compression, the other dampens on expansion.

I would take a very good look at the condition of the tires, front and rear...rear particularly...for runout or unevenness...and maybe head bearing adjustment.

[rugguy]

Thanks for the info on fork resistance. I never expected that they would be different.

My Avons have less than 5k and have been maintained. Good wear path and no uneven appearance.

I will take your advice and check the head bearing.....I take from your answer that you don't think the front springs are the culprits? I only have 28k on the bike.....I may also take the front off and have re-balanced.

Thanks for the help....

[big poppa pump]

Had similar issues some time back on my '98 tourer. Rebuilt the forks with new bushings and seals, 15W fork oil, re-balanced and aligned front wheel/forks, replaced rear shock bushings and still experienced the same front end wobble. Eventually traced the problem to handlebar risers, the riser bolts were slightly loose. Tightened and torqued the riser bolts to factory specs and all has been good since then.

[wild6]

Check the head bearing torque.

Check rear shock bushings. (+1)

Checked the torque on the tree pinch screws. (ya never know...)