My guess is the wear is from the front of the fork area given the angle of the forks the thrust would be forward facing. That said if you want the wear reoriented then face it backwards in the slider. It may not make a discernible difference, as the internal part is likely worn too.
I'm thinking the majority of the forces are straight up, and with the forks at an angle, the bottom front of the fork tube would get the most wear.. sure hitting a pothole will create strong (impact?) forces on the top/front side of the fork tube, and maybe that causes more wear than typical driving wear... or maybe the majority of wear happens when you apply the front brake, in which case the wear on the front/top makes sense... IDK
First check if they are straight.. if slight bend put it so they are pointing ahead..
Ah, thanks for the tip... I'll do that.
One of the forks had a 0.017" deflection, but my buddy and I got it down to 0.003" using a press. The other is less than 0.002"