300 miles on my 2014 pro with 156 X3. Sled is stock other than track and Kmod skid. First thing i noticed is that it runs way hotter on the trail. My 2012 155 was usually always around 125-140 max and the 14 with X3 is 165-190.(Both with scratchers down on freshly groomed trail.) Second thing was CRAZY traction compared to the stock track on the 12(I did the f-bomb track mod on that sled). First trip was a bit of a learning curve as the track made the sled handle a lot different. Seemed way harder to ride in technical situations. It felt like there was a lot more ski pressure and was pushing more compared to stock. Everything was happening a lot quicker as well because I was moving forward rather than just spinning. I came home from that trip kind of on the fence as there was good and bad. Kmod skid was set up to Kevins instructions as far as limiter strap, shock preload and compression dampening( took skid directly from 12 and put it in the 14). I installed RSI Burandt bars(2'' lower than stock), and let my limiter straps out 1 hole and switched the coupling block from 3 to 1 for the next trip and it was a totally different machine. Now I was in a totally different location from the first trip with a little different snow conditions but all I can say now is that I am 100% sold. Sled felt way lighter on the skis while boondocking, and still maintained exceptional climbing ability. I could easily out climb a 2010 M8 with 162 CE 2.5. I have the stock clutching for now and was only pulling 7900-8050RPM so I'm sure there is room for improvement there. I do feel that it probably could benefit from lower gearing as well as I could smell belt and pulled a few cords while riding hard for extended periods. Over all after a bit of set up for my riding I'm confident that this track is the real deal for backcountry riding and will most definitely take my riding to the next level. One other thing to note was that while climbing in approx 2' of fresh I was getting 38-40 mph track speed.
Cheers