I own 2 tables, 8' and 9' Brunswicks. I have 860 installed on each, and, they are level. When I take my break and playing cue shafts and put them against an end rail to create a ramp and then let the cue ball roll I get 25" of roll in one direction and 30" of roll in the other direction. This is true on each table. Are 860 cloths somewhat directional? Is there a standard length of roll for properly installed 860? (I use 13mm shafts with the joint against the rail and the tips pointed down table) Also, my local pool room tables have Tour Edition 3030 and roll almost 36" which I attribute to the fact that they are worn shiny. Is there a better way to measure cloth speed? Any input would be appreciated. Thanks, Joel