I' even tried Black Lab Linux itself, but it was buggy at least in my system.
The Black Lab Image Creator is not free and even if the price is now lowered its still up there, but I can give a go if I must, however Remastersys original is working at least for now, the problem I was experiencing was maybe temporally fix by me using a bit of good guesses as to what was happening before. Since then I invested more time in Manjaro mCOLe by Spatry (lived) and wanted to install Manjaro by MM on a separate HDD first. Wanted a dual boot with both Manjaros without partitioning the HDD myself, cuz it's a thing I've only done once or twice before and I don't like doing at all. The dual boot was not to be because the spatry version wanted to wipe clean the hold drive. Called it a day and now on the next day (today), will try a work around.
Edit 1: Update:
This post can be label as SOLVED:
Remastersys does not work at all, maybe even causes browsers like Firefox to stop connecting or its just a buggy firefox as usual but in any case Remastersys does not work, if however it still works in your remixes in circa 2015 then please let me know.
I've moved to Opera and its a charm in Linux, Chrome I only use for Netflix and Black Lab Imager DOES WORK AWESOME!