[Ryan from Ohio]

Problem with lowes and the like are two fold.

First off and the largest, half the people their cant read a tape measure. They are also to proud to admit such a thing. So if you try to correct them, they will just kinda go about their business... lol

Secondly. The saws usually arent square. They usually square them once a few years.

I had them cut some strips early last summer so it would fit in the car. They were off 3/16" over the 49"