This is the latest, most current version, currently still plowing up to 500. It's a freight train, but it works.
55k 55k 55k 55k 55k 55l 55l 55l 55l 55l 55n 55n 55r 55r 55r 55r 55t 55t 5bs 5bs 5bs 5bs 5c3 5c6 5c6 5c6 5c6 5c6 5c9 5c9 5c9 5c9 5c9 5de 5de 5de 5de 5de 5de 5de 5de 5de 5de 5de 5de