Light leaks are tiny, there's two about as wide as a line you'd draw with an ink pen. Panda plastic worked well (till I got tangled up in it), let it over lap where the two doors close & that blocked the light leaks. Tomorrow I have to work on the heat issue. Going to drill holes close to the floor for air intake. This air will come from under the bunk, so there won't be a light leak issue from them. The exhaust doesn't do much without an intake on the opposite end. Checking everything constantly & making corrections as needed. Another day or two & everything will be back on course.