i'm in the process of installing my new gas tank. i have the vapor canaister but in the resto process the brakets are gone off the x member. i can make brakets but when i got looking at things it looks as if the four lines come from each corner of the gas tank and feed into the vapour canister then to charcoal filter. my question is, why the canister? why can't i just tee the lines together and the go to the charcoal filter?