Juddering - can it be fixed?

[darty]

The Tuscan is back with the dealer trying to fix the juddering at c6,000 rpm (don't get to use the change up lights very often!). This is the third attempt. They have looked at the HT leads, spark plugs, throttle bodies and still can't fix it. I told them about the dethrottled chip (per Fish's posting) and they are still drawing a blank. Has anyone had this problem fixed by the dealer? If so, please could you let me know the what the cure was and who the dealer was.

Many thanks.

[darty]

Darrel,
My dealer have finally got in contact with someone at the factory who did know about this problem. They are sending a "dethrottled" chip to be installed. Hopefully this should fix the problem.