Dan_ed...I don't claim to be an expert on adjustment of antiskating force...in fact the futility of getting this right across the diameter of the LP, along with several other angles and forces, is what led me to seek out linear tracking. With linear tracking there is NO skating force, (not just low) and therefore no anti force to tweek up.
By the way, not all linear arms involve air compressors. The objective of an air bearing is to be frictionless, so that the pickup will move without sideforce. Well, perfection is hard to achieve, and there will be some sideforce. Another way to achieve a frictionless bearing is to use an electronic servo, and that is how my arm works. Don't be taken in by the criticism that use of a servo will inevitably result in "hunting". (Constantly moving back and forth trying "to get it right"). Only a primitve or badly designed algorithm will cause a servo to hunt. The basic control concept of my arm is to move the pivot point of its short arm at a steady rate that corresponds to nominal groove spacing. The arm angle is constantly measured, and if the groove spacing is other than nominal an arm angle will develop and then the pivot movement rate is slowly modified so as to restore zero arm angle. Note that the arm pivot point movement never stops or changes direction, so there is no jerkyness due to friction. Also, the servo does not move the arm, which is free to pivot, but only the pivot point. According to spec, the arm angle (which translates to cartridge azimuth angle)is maintained within +/- 0.05 degree.
