I have a problem with a gutter on one side of my house. I've used your calculator (thanks!) and have 2363 sf of rainwater to deal with. The problem is that there are two sections of roof that meet. An 18' section of gutter along one edge feeds into a 3' section that is at right angles to it, and this 3' section takes the brunt of it all. I don't see any calculation that takes into account the length of the gutter runs.
What should I do?