I was looking through one of my favorite Dirt Porn mags and came across this http://www.bairproducts.com/ This is in part the Larry Lug that Uniscaper mentioned. They also build a hydraulic tensioner that uses grease to adjust tension on the tracks (is not that how the antiquated and inferior nonsuspended tracked machines do it?) as well as aluminum bogey wheels (who would have thought that plastic would not hold up very well). What I find so interesting is that the aftermarket has no problem stepping up to the plate and offering fixes for an inferior product design (and make good money doing it I am sure). While CAT who is the name behind the product, has kept their hands in their pockets. Cat has no problems apparently charging customers for undercarriage parts and denying warranty claims instead of making product improvements. The aftermarket certainly was able to figure out a fix for atleast some of the issues. CAT should have been releasing upgrades at least after the initial series, but no they would rather show of that "world class" service and support. If your an owner of one of these machines you may want to bookmark the website or stick it on your fridge. They will certainly save you money.