Originally Posted by williamx5

Good day!!!

I would suspect it is the slider on the rail catching one of the flares on the rail... Happened to me in the 540i... You just have to go up crazy slowly (that is a technical term for really really really really slowly)....

Find what doesn't have any wiggle when it stops moving... It sounds like the front one might be hanging up on the rail... Try to wiggle everything as it is moving up... Blip the up button as you do...

Let us know what you discover... Good luck!!

Cheers!!!