This is the best option I have seen! Everything else seems to add a couple inches in height. I know this is an old thread, but I'm hoping you can give me more info on the work you did for speed rail tees. I ordered some up as soon as I saw your post, but promptly broke my first one trying to bend it into a U shape. I heated mine with a propane torch - perhaps the problem. Did you do anything special to get it bent without breaking it?Here are some pics, pardon the rain drops and gray skies.