Window regulator install

[FortyDave]

The door window on my coupe after having a dead spot finally quit. After taking the garnish moulding off I could see what appeared to be baling wire meshed between the regulator and the small gear driven by the crank. I spent a few hours pulling all that wire through the gears so now with no tension from the wire I ordered a small gear repair kit from Drake.
Is there a trick installing this kit leaving the window in or must I pull the regulator ? Any tips most appreciated.