Corvette steering problem

I have a 1984 c4 corvette, I’ve replaced the tires all 4, new kyb shocks, front end alignment and driving it down the road it pulls you into every rute in the road, and jerks you around like your drunk? If the road is new or in good shape it is fine. Thanks

Duplicate post: http://community.cartalk.com/posts/list/2145198.page