Getting MICR line to stay put.

How can I get the MICR line to print exactly where I want it (vertical position wise) on each check, no matter the word wrapping for long supplier names? Currently, my MICR line moves based on size of the supplier name (which can be one or two lines).  I'm looking for an option that says 'always print x length from bottom', but I don't know if such logic exists.  I am using a template that I created in word.  Thank you!