Hello..i have a Magnum NX and recently i noticed that my shock do not return to it's original position anymore..i mena..yf yi push my truck down, the shock will go down but theey will not return to its fully extended position..instead they return to half of its travel...y have to "lift" a little the truck so the shocks can return to their fully extended position....

What is causing this?..do i need to change the oil?....or is it the springs?..my truck is like 5 o 6 months old...i just use it on weekends....


Thanks for your help

Elias