Toolbelt,
Glad you are enjoying your Lawnbott robot mower! I cannot imagine living without a robot mowing our grass.
Just wanted to let you know about the new LB75 Lawnbott with optional V-meter. V-meter is a new return method that causes the robot to vary its return path back to the base. This prevents the tracks in the grass that you have experienced.
Unfortunately, they did not upgrade the LB3210 robot's software to include V-meter (sorry about that...). I think it's because the motherboard ran out of memory; otherwise I suspect they would have done it.
The down side of the LB75 is it is only for small yards, such as 1/4 acre or less. The model you have has many more bells and whistles than LB75, so for you (even with V-meter) it would be a step down.
Robotlady