2000 A6 2.7T

While on a trip I opened sunroof- then went to close later and it went nuts. Finally used manual crank to close for remainder of trip. Now it is operating normally except that when set to close it will not go back to level with the roof - it as if it is in a half vented position. i have cycled through all setting serveral times and have had to use crank to get it closed. Is there any way of adjusting the "vent" position?

Thanks for your help.

If the motor isn't making any strange noises, then its most likely the switch (potentiometer) When they go bad the sun roof appears to go crazy.

The sunroof is now working as far as following the commands of the switch to open -close- It's just that when it closes now it's as if the back part of the roof is in a 1/2 Vent position. I can open - close the roof, even open it in incremental amounts as the switch is moved and i can operate the vent function too.
However, when i am done and want to close the roof, it always goes to the same 1/2 vent position, then i have to manually crack down the roof to get it to seal.

Any ideas????

Thanks