Problem when editing Invoice report

Hi there, first of all congtats for your amazing job, FrontAccounting works great!

I need your help as i need to adapt the printed invoice to the Uruguayan regulation, and i have made many changes to the header2.inc, but i am not being able to make the sales item lines to be in a higher position of the screen (i removed the header fields such as customer´s reference, sales rep, etc.. and will to set the item lines higher.
I tried to change iline5 to iline2 in the header2 file but that only moves the item lines headers, not the item lines itself. I tried to modify the rep107 file but cannot find where to change it.

Do you guys know where can i perform this? thank you very much!

regards