Has anyone used Eternabond tape on roof leaks yet? I ordered 50' on Ebay last night as I had a tiny leakage thru my X-139FK AC this winter...also seems a little is coming down thru the front wall. Gonna get up and look and was gonna do the leveling sealant, but Eternabond seems to be a permanent solution and UV protected. It's expensive, but I like the "semi-permanent" feature (climbing up top being NOT my favorite activity!!)