Nice sleds - congrats! You will literally put thousands and thousands of miles on those without so much as changing the oil at the end of each season. Have over 4,000 (a drop in the bucket compared to some owners) on mine and runs like the day I bought it. IF you find they "dart" or "hunt" a little on the trail (may have changed ski design in last year or two), shim up the rear of the ski rubber with a piece of slide material or other similar plastic (about 2" long x 1" wide x 1/4" thick). This levels out the carbide on the snow, rather than having the nose of the carbide do all the work. The stock carbides are also a little to be desired - you will want some much better after market carbides on there ASAP. Those two simple mods will have the sleds going down the trail straight as an arrow.