It was only about $800 IIRC to have my 05 FD rebuilt. Depending on miles on the bike I would consider that since you're going to the trouble to work on it anyways. Problem may be in getting all of the parts (bearings) to do a complete rebuild. BM has changed what they display on the parts diagram. Old parts are usually still available if you cab get the correct part numbers.
I'd talk with your dealer about it. I'd want to know the mechanic doing the work has the experience to shim the bearings and set the preload correctly. That appears to be key to a long FD life.