...Most shops will not be interested or willing to take-apart or tune a derailleur of any brand. Maybe FWB and similar shops would, but those are few and far between. Most shops want to sell you a new derailleur - and you can't blame them for that, but sales are their modus operandi
The pins can be knocked out and in with a hammer and a rod of some sort. Obviously surfaces will be marred, and you will need to clamp the body securely somehow. Take a look at a few threads on 'tuning SRAM Red' here and across the internet, it has been done before and I believe I have seen documentation on the method.
As for the spring: you can possibly order the part directly from SRAM. Look at their technical documents, the spring has a part number. Call up SRAM (they'll answer the phone, very good customer service and super friendly folks), they might send you one if they have them available.
If they do not have the spring, it is possible to have someone out there in the ether make one for you. There are various persons and companies that make custom springs. At that point, however, it may be cheaper to just get a new derailleur.
|| Other projects in the works.