My 07 GXP has a trunk leak in heavy rain. After testing with a hose etc. the only place I could leak water into the trunk is through the holes in the rear deck that accept the pins for the top buttresses. I removed the inner liner and found that the interior of the deck lid is open to the trunk, so any water that gets in the holes will get into the trunk. Apparently the seals around the buttress pins are not completely sealing. I also noticed that the left buttress pin still has about 1/8" play when the pin is engaged. The other one is solid. Perhaps the left side is not compressing the seal enough? The pin is threaded into the base apparently for adjustment but it will not turn easily. How can this be adjusted?Has anyone else had this problem? How did you solve it? Are there improved seals available? Any help will be appreciated.