As for the rear swing arm brace, have you personally had experience with them flexing, or can you show me someone who has had issues? I'm open to others experiences, but from my personal experience building tube structures for race cars, as well as control arms and other suspension components the .095 1.5 in tube that is used for the stock swing arm should be more then enough. There is no added or lost stability horizontally in the structure to make the wheel "flop" around. There is added stress to the vertical plane on the arms, but I am confident it will hold up to potholes and other extreme compresstion situations the bike may see. Always interested in real life issues, feel free to post them up!