Having problems with your Tefillin?

I just had someone in my office, he explained to me that he has always had a hard time making sure the knot on his arm Tefillin touches the actual Tefillin box as is required.

I looked at it and realized right away that his Tefillin knot was on upside down.

That is a problem.

*Lesson* If you are having any problems with your Tefillin be sure to have a Certified Sofer/Scribe take a look at it.