I wouldn't touch the internal wiring. SME uses (and ONLY in this arm) a special ribbon conductor, similar to that used in Magnan cables and ICs. In fact, Magnan was their original supplier. This conductor is perfect fot MC cartridges, and also offers the least bearing resistance of all.
The one upgrade I would recommend, would be the addition of the optional damping trough, if it doesn't already have it.
The one upgrade I would recommend, would be the addition of the optional damping trough, if it doesn't already have it.