I'm upgrading my stereo system, and I need to route a harness from behind the head unit to the trunk. I'm currenly stuck with the inner plastic rocker panels. The rear door rocker panel has one screw which I removed. Now it seems that I should be able to pry it up, but when I do, it feels like I'm about to snap it in half. Is there a trick to this? Am I missing something? are there special pry points?

TIA

Dean