My Edger has been a pain in the behind for awhile now. For some reason, even with light pressure selected, the chuck clamps too hard. The result is a starburst pattern that originates from the point of chuck contact and radiates outward in the lens. This happens in all materials and coatings (w/AR & w/out AR). It's more frequent with higher plus rx's. I work for LC so my access to tech support is limited to our internal department. I have received a new chuck motor, chuck pads, Edger main board, and anything else related to the chuck. This unfortunately hasn't resolved the problem. The replacement of the main board did stop the chuck from "punching" the lens but it still clamps too hard. It appears that the edger isn't receiving the needed feedback from the chuck to signal the clamping too stop. Any suggestions?

On another note and maybe related, frames with large A and small B measurements often come out too long and need to be hand-sized down. This may be related to excessive head pressure.

Any advice would be greatly appreciated.