removing interior trim piece: MKIV Golf driver's side...

I am about to complete the battery relocation I've had in the works...

The one piece of trim I've forgotten how to remove (only done it once in a junkyard) is the lower (and long) piece of trim that pretty much covers the driver and rear passanger (4door) along the siderail. Any advice? I can't remember if I need to remove the verticle trim piece at the center on the B pillar in order to remove the rail piece cleanly.

thanks!

Yes, you need to remove the vertical trim on the b pillar. I like to use something to pry the edge of it from the rear edge, then pull it straight out to release the barbed clip, then tilt out from the top. There are a couple of screws at the base which need to be removed.