I have recently purchased two Wilson PS Classics separately. One of the frames has Pro Staff written in a thinner font and the other in a more bold font. The racket with the bolder font seems considerably heavier or more hefty if you will than the other. I almost always go for the seemingly lighter frame when I play. Other than the bolder font racket having lead in the handle could this be a factory deal? Are all the thinner font frames lighter? I will take them to the local pro shop and get specs as soon as I can. Good day.