ZamZam,
had a look at your VI. From your code I see a simple solution, assuming you know the header size. If you don't, I'm sorry.
Just insert a 'string subset' node between 'read file' and
'spreadsheet string to array'. Wire the input named 'offset' of 'string
subset'' with the header size. Leave 'length (rest)' alone, as it than
uses the remaining string.
This little code is not worth to upload an improved version of your code.
Greetings from Germany!<br>-- <br>Uwe