Problem with estimate and invoice templates.

Problem with estimate and invoice templates.

Does anyone know how to keep the formatting that is preset in the templates.
 
For example: I have customized my estimates to include oue website as well as our phone number. The problem that keeps occurring is that when I add the new line it becomes double spaced while all others above it stay single spaced. I cannot seem to get this to stop happening. It looks bad on final document.
 
Any help would be appreciated.
 
Thanks,
Bobby