Our robot's odometer reads a little under 75,000ft on it's drivetrian now (about 14.2mi
) and the chains have started to gum up from carpet fuzz (among other things).
Our (currently tired) robot is due for an overhaul that we'll be doing thursday morning in Atlanta. It'll be back up to it's old midwest-regional-speed self first thing Thursday.
But yeah, you are not alone in your robot's symptoms gurellia53, they aren't much different from the ones ours developed.
Good luck finding your problem,
-q