Input shaft (worm gear) play

I just had my 65 Dart at shop getting my rebuilt p.s. box adjusted and front end alignment done. Way to much play in new box :( technician showed me that the input shaft was flexing in and out as we turned steering wheel back and forth. I'm double checking here first if there should be any shaft movement before calling company to see what they'll do. Last thing I want to do start of summer is take time to pull out box again and send in to get fixed.