Garage door hits opening chain

My torsion spring broke on my garage door so I ordered a new spring and replaced it but now all of the sudden when I open the garage door the top of the garage hit the opening chain right before the garage door is suppose to fold and go parallel with the ceiling. I never had the problem before. I even took eveverything apart and redid the work with same result. I even released the tension on the torsion spring thinking maybe I wound it too tight but didn't change anything. Not sure what else I could try. Any one have any ideas to help. Thanks