About a week ago I started having problems getting the truck into first and into reverse when stopped. By difficulty I mean I somtimes have to apply a lot of force to get it into reverse or first. I checked the fluid levels they all checked out. Could it be a clutch adjustment issue? the truck has 70,000 miles on her. She sees mostly highway miles. I ask about the clutch cause if the truck isn't running she shifts in first with no problems.