Pitman arm is hitting tortion bar! Help?

I have a 1973 Plymouth Duster with a 340, 727 transmission. It has new pitmar arm, new idler arm, v8 tortion bars. The problem i am having is the pitman arm is rubbing on the tortion bar, in turn i cant turn down the tortion bars to lower the car to make it handle better. Any ideas what could be wrong with it or how to fix it?
Thanks, Brandon