You only reach Austar Technical support after wasting 10 minutes with some Asian person in an off shore call centre and after they have completed their runaround, you get elevated to the SECOND level.
God knows how many dish's I have seen in the tips, damaged by fires etc and NONE were branded with any sort of identifiable marks.
You wouldnt ask question 2 if you know about the incompatibilty of trying to run Vertical and Horizontal on a single input LNB.
This goes back to when people had both Aurora and Austar or multiple STB's and Austar started the first of many changes by adding Horizontal to their transmissions which stuffed up the show considerably.
I am running both VAST and Austar on the one dish with a Dual LNB but I have THREE standard STB's and a Multiswitch splitter/combiner that allows this to function.
One MyStar and one Dual LNB wont allow you to add VAST as the Mystar uses TWO cables to the Dual LNB, one for each tuner.
I am sorry but I dont think I would like to paying your company for this as they dont seem to be very technicaly able or competent.