My fuel system's I've ran for last few years
Braided Fuel Line (Jegs Brand)
Fuel Filter (Earls)
Belt Drive Fuel Pump (APD)
Billet Return Regulator (APD)
Fuel Log (APD)
Carb (APD)
Fuel (torco)
Longest fuel sits in the line is weekend to weekend, if it rains it'll sit there untill I race again. I've never ran no top lube or bieleve in draining lines or spraying wd-40 in the carbs. I have a buddy that does this every time he races same setup and when taking the motors apart we see no difference in anything. I ran my Injection (rons toilet) this way also, and will run my Terminator that way this year. Its all about what you feel you need to do.