ig88,
Yes, there is some play in the tension pulleys (rocking back and forth) Once I get my kit to where I can do some actual movment, I will examine it closer.
Tamiya has obviously done this for a reason, as the rest of the kit is just an outstanding build with A-1 fit!
Check out the Tiger 1 group build for any other questions you may have (sticky post at the top of the Armor forum) I have also devoted a website to this build. Just click on the link below.