1970 Swinger 340 Steering

Gang,

Thanks for the alternator help I got with my last post. My current dilema is my steering. I have a 1970 Swinger 340. The car is an absolute beauty and extreemly correct but terrible to drive. There is a ton of "slop" in the steering wheel. I have checked the pitman and and everyting under the car and adjusted the set screw on the box, verified fluid levels but it's just terrible. The primary problem is the slop neft to right in the steering wheel before any actual turning happens. The coupler seems tight so my fear is whatever is going on is happening inside the box?

Any suggestions? I was told there is an aftermarket box with tighter ratios that makes a world of difference, I was thinking perhaps I take my correct box off and save it and possibly install an alternative or perhaps the original needs to be rebuilt or something. I looked at the service manual and it is beyond my ability to crack that baby open and try to diagnose it much less opperate.

PS: it is riging on the original polyglass tires, any radial tire recomendations woudl be welcome! (I have heard mixed things about croker)

I am located in CT Thanks! Terry 203.644.8403