Hallo,
I'm a TM-6900 HD combo super user (downstairs) and using upstairs a TM-5300 D+ usb.
The fixed dish's:
Triax 95 cm: 1x single lnb (4.8°E), 1x twin lnb (1°W)
Triax 110 cm: 3x twin lnb (28.2-5°E,23.5°E,19.2°E), 1x single lnb (13°E)
diseqc 8 to 1
diseqc 4 to 1
as you guessed the twin lnb's...