I have an 09 Nytro RTX-SE. I recently noticed that the sled was tilting to one side. I checked the pressure in the front shocks (FOX Floats) and found that one had the normal pressure, but the other one only had about 10-15 lbs in it. I have not checked them in a couple of years, and that is my fault. My question is, does this mean that the shock is blown, or do they occasionally need to be inflated? any help would be appreciated. Thanks