Just before going to the Tampa RV show yesterday we heard that Blue Ox sends a team to service their tow bars, was also told to be there early as it's a popular service. Even though we arrived when the gates opened I still stood in line for 30 minutes to register. For $35 they dissemble the entire unit, lubticate and replace worn parts. Some had brought theirs with them on handcarts, if you don't they take your number, call when your up and take you in a cart to your car, I had mine in the back of the CRV and service it on the spot.
I don't know where else they offer the service but would guess it would be most other major shows.
