Sunroof Adjustment?

I have D2 TD5 2001.
Read somewhere that it is possible to adjust electric sunroof closing "tightness" on seal by removing a "blanking plate" and adjusting with allen key.
Anyone heard of this ?
If this is possible, where is this "blanking plate" ?

Dave

There's no adjustment available but there is a manual override to open/close the sunroof.
The blanking plate to remove is below the motor in the plastic where the switch is, remove that and you will see a hole, insert an allen key of the size to fit and push to dis-engage the motor drive and then turn the allen key in the direction you require.

OK Sounds like I have got the wrong end of the stick on this one.
Though it was too good to be true.
Thanks
Dave