It looked like (from Dish's install instructions) that the Type 1 was adjustable (a set screw on the arm between the 110º and 119º LNBs). The sweet spot on the dish is obviously the centered FSS LNB ... and it looks like they are accepting a less favorable position for the side LNBs, compensated for by the larger dish and higher powered DBS satellites.
To design a dish that is 2º compliant for FSS but still can receive a signal 14º off center with two offset LNBs for DBS must have taken some engineering. No t being able to adjust the offset of the 119º LNB could lead to a weaker signal. (I note that the instructions want a near equal signal level on the 119º outrigger and the 105º FSS LNB.)
I also note that the signal level meter still ends at 125, so they apparently are not expecting the larger dish size to push the signal over the limit. They must be accepting the loss.
JL