Your post 11, for example - you will have to excuse my bluntness - speaks of your constant moving of the goalposts...
One thing is clear: things are not done consistently there! One moment dishes galore, both tuners are used, the same setup for both tuners, then one tuner is not used...
Post 7 motorised system is used, later on it is not used...
You say 'no loop-through', then I am thinking that probably some of those other boxes you have may have a loop-through and you might be using it but not telling us you are, whatever the reason, and that MIGHT be affecting the setup, as in "clashing" would happen....
Then, I am thinking that you should know not all lists have the same format, i.e. they are not to be pushed into all E2s regardless - but do you know this?
I.e. DMM is not to be used in OE-A E2 etc., so don't push your DMM list into PurE2 because:
1) DMM
2) OE-A
3) OpenPLi
(is OpenViX different a bit, as well, so no. 4?)
have a different format!
So, you may be committing a grave error there, as well, rigidly trying to push something that works in one but can not work properly in another STB with a different E2...???
One moment it is just one tuner, the next it is two used, one moment a box is working, the next it goes tits up, one moment it is just one STB on a cable, the next - we are not sure just how many boxes are connected to a single cable, in how many spaces, since you have quite a few STBs to play with... And we all know that loop-through can cause problems, especially when on different transponders... Problem solved, problem re-appeared... Problem here, problem solved, problem re-appears... How do you connect them, which lists go where, are you restoring settings or doing it all carefully from scratch, manually...???
Where do you live? Is the electrical current steady? Do you have some kind of 'shock absorber' to shield the sensitive equipment from serious power fluctuations? Tuners and network cards usually go first when this is not OK...
Are you reconfiguring your internal setup all the time (it seems to me you are)?
I just see confusion there, sorry...