1966 S Type rear window regulator

[markschofield1956627]

The nearside rear window on my 1966 S Type has, tonight, stopped working smoothly. It wound down nice and smooth but will only go up 2/3
On examination the end of the window near the B post is out of the channel although the top of the window is horizontal.
I have removed the trim and have such access to the regulator as is possible without removing it.
I have lubricated everything in sight with WD40
Before I move to removing the regulator and examining it, can anybody give me some tips about the best way to correct this problem

Thanks

Mark

[mike020150]

Before pulling the regulator out of the door and stripping everything out of the door, it would be as well to check the lower fixings for the channels in which the window runs. If luck is on your side, one of these may have come loose or adrift, allowing the glass to move out of its guide. Mike.