Hello
When they are first installed they will be very tight. If you can turn them by hand or with a short pry bar in the studs you will be ok. If they are so tight that they won't turn at all the thrust block my be cocked in the carrier. Sometimes if the thrust block tilts it will put a lot of load on the axles. The best bet would be to call in so they can go over more details since there are so many different things it could be.
Thanks (877)852-7720