I just picked up a 93 dx hatchback last night, and today it started pissing down rain. I go to open the gate and my amp is soaked. I thought i heard water dripping as i started out, but I'm not sure if its coming through where the back lip is mounted, or if its from the glass. Now that the rain has stopped, I can't tell where the leak came from. Are either of these a pain to fix?