@Dany *******
There wi;ll certainly be experts, but a facebook group is not the first place to look for such experts.
People in FB groups don't share enough info online which is understandable, and the for the real experts it is their job and they won't give free advise here, which is also understandable.
And personally I think that when you use DTV to its limits, you should just consult an expert, not doing so might result in unpleasant surprises, and that has nothing to do with playing with fear of people.