I have just replaced my sunroof's tracks (the mechanism that holds the inner roof cover that retracts a little bit when the p.sunroof is tilted up). My problem now is that: when I try to auto-close it, it does not close snug anymore (the backend of the roof is tilted up approximately 3/4" from the lip of the roof opening). I have to play around with the switch just to approximate where it stops. Is there a way of calibrating this? thanks a lot...