I thought I would give an update on my issue. I replaced the spring and pivots in the linkage in the cab and that certainly tightened up the shifter. I opened the linkage box and got the tranmissions rods in neutral and adjusted the gates to perfectly align. They were only off a little, maybe and 1/8 to a 1/4 inch. Happy to say after these two minor adjustments, it shifts like a dream!!!! the linkage box is the key. Before the adjustments it was a mystrey shifter and would lock up in first gear.