I'm getting ready to carve a jig that will hold 4 copies of the same project. I'm using 3/4 MDF and I checked to make sure it is square. I was going to let the machine measure the board and use those measurements in Designer for maximum accuracy. BUT...... I'm getting slightly different measurements and not sure if it's enough to worry about:

1st Attempt: W=10.018 L=17.051
2nd Attempt: W=10.017 L=17.057
3rd Attempt: W=10.018 L=17.044

Machine has about 35hrs, rubber belts and dust collection, about 86lbs head pressure. I did clean the board sensor before measuring.
I did recently replace the X-Gear assembly due to my own stupidity but I'm pretty sure I got that right.

Am I being overly critical?

Roger