So i take my hot rod out for the first few test drives and it has a horrific death wobble when you let off the gas hard or hit a decent bump. Its the kind that doesnt stop till you have the car ablsolutely stopped. I've reset my kingpin inclination (positive caster) to 6 degrees, and reset my toe in (bias ply front runners) to 1/4". The front end was on the car before i rebuilt this time and didnt have a single hint of a wobble before. The only things i've really changed are the steering box and the tires this time around. One tire has a decent flat spot in it from sitting but i havent even got the tires warm enough to see if that will correct itself. The rims are brand new and i dont see any bend or runout on them. I just had the tires all mounted and balanced and i wouldnt see a balance problem cause this horrific of a shake. The steering box, an F1, seems decent with a little amout of play in the steering shaft that the pitman arm attaches to, but again, i wouldnt forsee this little amount of wear causing something this bad. Any ideas?