our cab doesnt lift but we took the cover off and sprayed some pb blaster in there and one pedal is a lot better the other one is still sticking could it be a valveI'd lift the cab and check the linkages, they should not bind up. It could be the pedals them selves or another object restricting movement.
About all you can do is lube the linkages under the cover between your feet. You can also look at the spools in the valve for scoring, but oil should be leaking there then.our cab doesnt lift but we took the cover off and sprayed some pb blaster in there and one pedal is a lot better the other one is still sticking could it be a valve