tire balance?

Well I am trying to figure out if my vehicle is pulling hard to the right due to my tires being rebalanced. I had a shimmy with my 33 inch tsl radials so I figured they needed to be rebalanced and now it pulls real hard to right. I also had my alignment re-done at same time but I think that is not the problem. Is excessive pull a common symptom of tires being unbalanced
thanks

No. Your alignment needs to be checked.
Does it pulled hard while driving or only while breaking?

I have a hard time believin it is wrong twice but I will go in again to another firestone with a different alignment guy. it only pulles hard during both.