I have 13.5' Duravent DVL double wall pipe connected to 14' of ICC Excel double wall chimney going through an Excel metal roof flashing with an Excel spark guard cap. When it rains hard I can hear water dripping down the pipe. It rained hard last night, I took the baffles out this morning, and they were wet and holding water . It's not a lot of water, just enough to worry about. Can enough rain come through the cap to cause this? I checked the ceiling box and it was dry. Haven't seen any water on the outside of the pipe. The chimney above the roof is too high and steep for me to get up there and inspect the seams, but I did seal them before the roofer installed it. Ideas? TIA