Front end noise and steering problems

We have a 1999 Camry 4 cyl with 185000 miles manual transmission. We have had the struts replaced twice on the front in the last two to three years due to a clunking noise or rattling sound when going over bumps, dips in the road, etc. Just had it to the dealer because of continued noise and they suggested changing the strut mounts. I changed the mounts and now the car pulls to the right or left. If you make a hard turn to the left, when you straighten out it continues to pull to the left and vise versa on the right. I just had new tires put on a couple of days before I changed the strut mounts. I had the car aligned after the pulling problem started and it was not out much and is still pulling. I have to hold the steering wheel tight to keep it from roaming off the road in either direction. I also noticed that there seemed to be a "catch" in the steering before I did any of the mount work. I don't see where anything I did with replacing the strut mounts could have caused the steering problem? I am thinking rack and pinion or possible CV joints? Any thoughts?