Window regulator changed in the 740, was starting to thunk when at the bottom of the opening on the drivers door, managed to pick up a second hand one, now sorted.
unfortunately I unplugged the door airbag with the key in the ignition and the battery still connected, once it all went back together the airbag light was stuck on, but I was able to clear it with my Carsoft reader. Phew, note on this for the E38 and probably E39, you’ll need to ensure you plug into the round socket under the hood and not the OBD inside, that only allows connection to the DME. Once I got that sorted, thanks Bimmerforums, light has gone and airbag control is reset . Plus window operation is nice and smooth