If the skis are "noted" with a L and R ( by felt marker) or sticker,,then you have a personalized hand tuned ski!
Let me explain.
A "demanding" skier hand tunes the skis for his/her ability level and type of terrain and conditions! No machine tune can do this as well as a hand tune,,,,by a experience tuner!
All my skis are tuned with a R and L indication! In my case I have a red sticker for right ski!
What is the difference between skis ( in the recreational skiing context) ?
All my skis have a very sharp inner beveled edge at tip and tails! Thus the right ski has a very sharp INSIDE edge from the point of contact of the ski on snow to about 30 cm. towards center of ski!
The other edge ( outside edge) is not as sharp ( not as beveled) and is ever so slightly dulled at initial point of contact of the ski to snow !
You are probably wonder why this detail? Why be so ,,,,,,,,
For me,, I have found that the most dangerous part of the ski terrain is at the very end of the runs,,the flats!!! That is where I relax, that is where I am tired and that is where the surface is uneven due to many skiers converging to one spot,,,the lift !
The modern ski is designed to be on edge,,,,,,like a trained guard dog it looks for "scent",,that curve ! One small tilt to the outside will result in a instant carve on the outside edge! That dulled outside edge gives me a "safety zone" !!!
During the ski season,,I also tune daily with a diamond stick,,,, take out the dings and nicks on the inside edges! When I do a full tune in my shop,I pay particular attention to my inside edges since they are my primary working edges!
That is why I believe the skis you have are "dulled" in the manner noted!
Hope this helps you!