Sounds like you need to pick up a copy of the regs, read them and then read them again.........don't take this the wrong way, not trying to be a dick just seems you need to familiarize yourself with the regs, it is all in the book (or in online summery of regs). Yes it can be confusing but reading it a time or two will really help you out instead of trying to get your answers off of unknown people on an internet forum (they are not always right but think they are).