The top on my 2004 XLR won't release from the front latch. The top function begins with the trunk opening and the front shelf rising to position, but then won't continue. I have tried releasing the roof by removing the headliner plug and turning the latch. but even that doesn't release it. I know I probably need to replace the latch and/or the sensor, but in order to do that I have to get it open. Any help is greatly appreciated.