Maneuverability/handling problems or problems climbing?
If it's handling it looks like you have stock skis still. Replace those things ASAP with polaris grippers, the new arctic cat G2 ski bottoms, SLP Mohawks, or SLP powder pros. The stock ones dive unpredictably. The cat ski bottoms are the cheapest route and use your existing runners, loops, and dampers. Can't remember if the through bolt and axle are the same, but they may need to be longer. Powder Pros would be most aggressive and what I run in early-mid season in the fluff. Change to the cat skis in the spring. Depending on your weight try 70psi in ski shocks, 130-140psi in rear track shock, and run the front track shock with just enough tension on the spring to keep the retainer from being loose (5 threads or so below the preload nuts). Always check the shock pressure close to the temperature you will be riding at with no weight on the sled. I check mine on the hill with the sled rolled over on its side to get the weight off. If you want the front end to feel lighter and more lively crank up the front shock tension so there's about an inch of threads below the preload nuts. This will bring the front end up more, but deep snow performance and climbing will suffer. I made adjustments to the front track shock spring based on the conditions of the day.
Stock engine and clutching? What elevation are you at and what is it pulling for RPM under load?
