Hello there, - replaced the guide pin in the antenna gearbox as the drive gear didn`t engage correctly with the belt..........So Mechanically it works beautifully however connecting + to Black on the 3 pin socket and - to White/Yellow it extends as it should stopped by red contactbreaker on the disc......................but for retraction Black to + and - to White/Yellow-Yellow/White the mast stops halfway down by contactbreaker/Yellow wire..................If I swop + and -, the mast goes fully down but only half up................Guess I should take a breake before I go nutts however my wife claim that I was allready nutts before I started on that antenna, - I dunno.............................Any suggestions would be highly welcome.......................