Quick question on using an iTC receiver with the iTC extend box. Is it possible to change the WAAS satellite being tracked by the iTC or will the receiver do it automatically? We're using the receiver with a brown box for autotrac and I can't see anywhere in the display where changing WAAS sats is an option. The only setting I see is whether or not to use WAAS at all, as well as the setting to change for SF1 frequency which no longer matters anyway. Did I just throw away $600 for an extend box on a receiver that won't work in a week? Any info is appreciated. Thanks.