My roof is a basic A frame style with the chimney going up the side of the house. So there is a high side of the chimney and a low side. I know I'm suppose to use step flashing up the side, but do they make a piece of flashing or something besides tons of caulking that is designed for that intersection? I can bend a piece of flashing to wrap around and go down the side but then I would have to cut the bottom to make it wrap around which I'm trying to avoid. I hope this makes sense.