For a few years I used my VU+ Ultimo 4K connected to a 1 metre Gilbertini dish driven by a STAB 120. The motor tracked the arc perfectly and I could view satellites between 45 West to 62 East.
I used VIX software and moved the dish using USALS.
I had problems with the Ultimo 4K so simply replaced it with a VU+ Duo 4K SE. Installed the latest VIX software reset the dish position to zero and connected the dish to the new receiver.
The settings of the 4K SE were identical to the Ultimo 4K but the dish would not drive to the correct requested position. The 4K SE did not seem to know where the dish was pointing.
I have some other satellite receivers with the latest VIX software and none of them could successfully position the dish.
Where have I gone wrong?
Is there a trick of how to tell the receiver where the dish is currently pointing?

-Eric-