One other thought; have you loaded a .dfg Van's settings file for the GTR225? Your USB stick containing your downloaded Van's EFIS software and settings files should contain a file that looks like this or similar:
You would have loaded this during your initial setup of the SV, but I thought I would ask.
My download did not include a .dfg for the GTR225, only one for the GTR200. If you don't have it you may have to ask Van's for it.
E-LSA RV-12 ULS