Enigma2 With Motorised Twin LNB and Fixed 28.2 dish.

So I've got my Mutant HD51 and I cannot fathom how to do something I think is quite simple but configuration of this is proving to be problematic.

Basically I want to do the following:

Tuner A > Stab HH100 > Output 1 on Twin IBU
Tuner B > Diseqc 2 Port switch > Port 1 > Output 2 on Twin LNB
> Port 2 > 28.2 Fixed dish

I want tuner B setup as "Second cable of motorised LNB" but has the 28.2 Fixed dish as well. However there are no Diseqc settings for the switch using this setting
in...

Enigma2 With Motorised Twin LNB and Fixed 28.2 dish.