I'm a little confused!
You mention yours was that tight it restricted the steering but I've tightened mine up as far as it can go and the rack is now solid but there is no sign of it restricting the steering at all.
On lock to lock its as smooth as it was before.
I did read somewhere else you had to be careful how tight you did these up but I can't figure out the problem.
On the original stock clamp it's nipped up tight and the only movement is how much flex is in the bush. The idea of the uprated clamp is to do away with the soggy feel of the bush but keep the restricted movement of the rack?