Hi Michael,
Door started to stick and needed assistance to open and close until it eventually jammed and had to be forced shut. Turning off the electrical assist didn't help and if anything made it worse. Local Toyota dealership wouldn't touch unless the van was unconverted to allow them to take a look. Van was bought froma private owner who had purchased it from Milldown campers the year before. I would take it to them to have a look at but they are in Folkestone.