I need some advise please.As usual i also have had problems with the 4 car digital powerbase and ended up back with the analouge system but the good news is that i have managed to pick up a 6 car power unit so could someone please advise where i could send it to to have it upgraded to PB PRO. I live in NZ so i am miles away from anyone but it could be woth it as from what other members are saying that it is the best way to go.