Is there a way to tighten up the steering on an 49' B steering box. I think it is a Ross steering box. Linkage from the steering arm forward is nice and tight. The play seems to be from the interaction of the teeth and threads in the box. Both the threads and teeth do not seem worn and no metal shavings etc in the grease. Have almost a 1/4 turn of the wheel each way before engagement of the wheels. There is a slotted screw on the right with hex nut but turning it really does nothing. Looking inside the box, I really cant even see what this does/interacts with. I should have some pics later this evening if nobody has figured it out by then! Thanks!