[john]

just a thought, wouldnt the foam take alot of power to turn the track? on my 450 case with street pads there are holes on top of where the sprocket tooth would be allowing the tooth to just push the dirt out .. Not sure i you want small holes in your track or if it would even help in that scale. Just throwing an idea out there. i looked at the first tracks pics you posted and it looks like the track frame covers most of the track on ground but i couldnt see if dirt falls from the top of track to the gap from the track frame to the sprocket? my case has a removible rail cleaner, it just a piece of hardened steel that sheers off the bigger pieces. hope you get it going.