Hmm strange , I’ve used the plus method on a pro , don’t have drains , sd card(s) works , resolution can be reset by a DPI app like Resolution Changer
used these DPI setting width 1200 Height 1920 DPI 312
only got some SD failures in windows but is already raised in other forum topics and sandisk only works for me
I even installed the pro image on a plus model and works fine also (except for one boot logo error message)