The manual says to pump the grease ram until one gets about 2" of sag as measured from the steel track frame down to the track. Before I got Bobby I rented a 331 and popped the tracks off because they were too loose (thankfully, on level ground, with easy room to fix). So, being OCD, I have the tracks on snug (as per manual)...especially since there are situations when losing a track would be "oh so bad". Well, I am beginning to think having the rubber tracks on tight is not necessarily a good thing? My idlers are getting groovy and the sprockets seem to be wearing down. Unfortunately, I play in gravelly sandy soil with lots of rock...the only saving grace is that I avoid shot rock. Curious what the pros do in terms of tension on the tracks? I should note that occasionally I get a small rock caught in the tracks...I back up and it usually spits out, but I can hear the spring on the idler pop as it does so...