From the sound of it, your lens is beyond needing a simple CLA. Your lens has a major overhaul in it's future. Which is a good thing because it's possible that it's never bern serviced when the lens is overhauled, it won't need to be worked on again for years. Send the lens to Hasselblad in New Jersey.

I would spend money on having your lens repaired rather than going out and buying another one that might need repairs in a short amount of time, thus not only are you out the cost of the lens, but the repair cost as well. Hasselblad service will guarantee your lens for six months after the service.

David Odess also does good work (he was trained by Hasselblad) and will also guarantee any work done for six months.

Good luck! Let us know how your lens repair works out.