Mr P. Already got the SFI book. Frame is done to spec for 7.50. I've been watching several youtube videos on bending techniques, including how to determine material length in a bend and making some cheater bars for measuring out between bends. Just like anything else, practice is key. I already have an idea of how many times I am going to redo my door bars to fit right due to multiple angles on a 3D plane. I might make some test ones from pipe from Lowes, before I commit to chrome moly.