I was cleaning out the PE Summit Insert this morning when i looked onto of the stove between the surround and the top, I noticed there was rust on the top. I remember hearing water dripping in when we had one of the heavy rain storms. When the installer put the stove in, he "inverted" the top plate and epoxied it to the terracotta tile coming out of the chimney. I would imagine that it is leaking around that seal. If it wee coming down the liner, i would imagine water would get inside the stove. This stove was installed by a dealer last December. Will this cause permanent damage to the stove, and what do you recommend should be done here.