Sometimes we can be as dumb as hell.
We established in your first post that because of the vblf that your files use the inputline imports the WHOLE file in one record, how could we have forgotten?
So it works for my files because they DO input 1 line at a time and not for your files because they don't, that was why we went to importing the Characters one a time and decide where the Record delimiters were.
So it look like we will have to do the same here.

Although I don't really understand what would be detrimental about having more header records as they can easily be deleted in other programs.