The HL doors have pretty stiff springs.....
To see if it's just the doors or something else, measure how high they are with the lights on. Then shut off the lights and pull the doors up to the same height by hand.
There is some adjustment in the HL lift where the assembly bolts to the car. If the lift is sitting a little to high it might also cause this. You could try loosening the 4 nuts and letting the lift assembly drop straight down a little bit.
[This message has been edited by theogre (edited 01-06-2002).]