OP,
If you have the time and the inclination, I would recommend doing the work yourself. The cost to have someone else do the work will offset some of the cost of the tools necessary outsource the job at hand AND you might find it very enjoyable. There are a lot of members here that can/will offer you advice as well as many videos on youtube to help guide you on you quest. I find the videos helpful much more than reading a manual because you can replay a scene over and over to actually see how things are done.
If you don't want to do the work, I would call around to see who can do the work for you....visit the shop with your bike to get a feel if the shop wants/can actually do the work. The shop mentioned in Long Beach can be very
expensive.....Try Helens Cycle in Santa Monica and ask for Gilbert.
Thanks for joining us!
Good Luck, Best, Ben