Outer Limits 4x4 Board

I have a standard Maverick (at the moment), the steering seems too heavy, I've checked the belt, fluid and both are OK. Could it be the pump (it isn't noisy), how can I find out?

I think i may have the same problem, look forward to the responses

Up tyre pressures to about 35
heavy at idle thats how they are.
Put Moreys conditioner in power steer fluid. About 1/2 pint

Bazzle