I have over 30 games on my Cell with no track in the shell.  You might be looking at the dirt and oil rings on your track, but that is not the track like scratchs and wear marks on the ball.  This shell is extremely durable and thus does not track up as easy as older shells.  It does need quite a bit of maintenance though.

I was going to say that it could've just been the lane surface.  Golden Pin Lanes in Tucson is that way, I bowl in a 4 game scratch league over there and when I'm done, the ball looks like I haven't polished it all season.  I have to hit it with an abralon pad on a spinner and repolish it every week.  It doesn't matter what ball I use there (Storm, Ebonite, Columbia, L/LM), they all do the same thing.  Thank goodness they're finally putting in new panels, scoring machines, etc. in a couple of months.