ORIGINAL: bcovish
If you send it in they will install the part for free, if you order to part they will charge you for the part. After using the TX for a little while I like it better without the detents.
I'll bet that the shipping on a TX to get a "free" ratchet will be more than the purchase price + shipping of the ratchet to install it yourself.
I have seen very few people go back to a ratchet after flying with smooth for a little while.