Depending on the actuation number, I'd be selling it as faulty and buying used elsewhere.
If you do send it in, get an estimate only before proceeding. I sent a lens into Hasselblad, they quoted £700 to fix but it had to go to Europe, when it got there they went ahead and did further unauthorised work on it (they found more things wrong with it) which added another £600 to the bill. A used replacement lens would of been £100 cheaper.
In Hasselblad's defense I complained and they honoured the original quote but even on used items you are still paying 'new' prices for repairs and often it isn't going to be cost effective to send it in.
Yet, it could be a simple fix.