Front suspension issues - 97 Chevy K1500?

I bought a '97 Chevy K1500 last winter knowing that it needed some front end work, I'm pretty sure whoever had it before me had a snowplow on it and all the bushings, ball joints & tie rod ends were tore up. I replaced all the bushings in the upper and lower control arms as well as the sway bar ones with poly bushings. I also replaced the upper and lower ball joints, inner and outer tie rod ends and shocks. Everything went together nicely, I torqued everything according to the book (some torque values seemed a little high) and set the torsion bars back to where they were when I took everything apart. Went to take it for a test drive and now I'm a little confused. It rides horribly rough, like it's not using the shocks at all, every little bump makes the front end bounce bad. At first I thought maybe the previous owner had cranked up the tension on the torsion bars to help compensate for the weight of the plow so I backed them off 3 turns and drove it, it made a little difference but barely enough to be noticeable so I backed them off another 4 turns (there's only about 2 turns left before they're completely backed off) and it got only marginally better. Has anyone had this happen to them before? Is it because the poly bushings are that much harder than the regular rubber ones? Is it something that will get better after I "break" everything in? Any help would be appreciated.