My 5 + year old Winegard SK 1000 Trav'ler Sat. Antenna failed to fully stow. After several calls to Winegard and their inability to correct the failure, other then replace with a refurbished Roof Unit for about $600 or a New Roof Unit for about $1200. The interface box gives a message [failed communication to Antenna] I manually stowed the Antenna to travel. Does anyone have any suggestions on how to fix this problem?