Your configuration, if I'm not mistaken, it's a bit of a mess
If I understand well, you have 4 LNBs, don't you? (It's more clear to talk about LNBs instead of inputs), 3 are Universal and one is a SCR for 0,8W.
You connected:
-the 3 Universal LNBs (I suppose they are connected to a DiseqC switch) to LNB1, i.e. Tuner A.
-the SCR LNB to TunerB (LNB2 of Solo4K).
If this is the case about your , try it.
Tuner A should be simple.
Configuration: SIMPLE
DiseqC A/B/C/D
with the 3 satellites 5E, 13E, 19,2E
Tuner B
Advanced
LNB1
Type Unicable (choose yours or one with the same frequencies, for instance 1210, 1420, 1680, 2040)
SCR1
Connected to: NO
Tuner C
Advanced
LNB1
Unicable
SCR2
Connected to: Tuner B
Tuner D
Advanced
LNB1
Unicable
SCR3
Connected to: Tuner C
Tuner E
Advanced
LNB1
Unicable
SCR4
Connected to: Tuner D
I simplified the configuration because these are the settings that matters.
All that if your SCR is a quad (SCR1, 2, 3, 4) otherwise you can go on with its channels if it is a 8 channels.