well of course the dealer isn't going to give you all the good info and then not make a profit off you

im thinking this will help you out tho sucks youll prolly have to take it back apart but at least the auto function should work right again (out of infiniti factory service manuals)
FRONT DOOR GLASS AND REGULATOR
SETTING AFTER INSTALLATION Setting of Limit Switch If any of the following work has been done, set the limit switch (integrated in the motor). ● Removal and installation of the regulator. ● Removal and installation of the motor from the regulator. ● Operate the regulators as a unit. ● Removal and installation of the glass.
Resetting
After installing each component to the vehicle, follow the steps below.
1. Raise the glass to the top position.
2. While pressing and holding the reset switch, lower the glass to the bottom position.
3. Release the reset switch, and check the reset switch returns to the original position, and then raise the glass to the top position.
CAUTION:
Do not operate the glass automatically to raise the glass to the top position. Work pushing the door switch at the top position on when working because the partial down mechanism has adhered.
FITTING INSPECTION
● Check that the glass is securely fit into the glass run groove.
● Lower the glass slightly [approx. 10 to 20 mm (0.39 to 0.79 in)] and check that the clearance to the sash is parallel. If the clearance between the glass and sash is not parallel, loosen the regulator mounting bolts, guide rail mounting bolts, and glass and guide rail mounting bolts to correct the glass position.