I had mine rebuilt by Boyle Future Tech and highly recommend it.
http://www.ttora.com/forum/showthrea...ght=alternator
Factory rated it at 60A max. At 1500 RPM, it now makes 42A, and 130A at anything over 2500 RPM! Price was very reasonable at $118 (including return shipping) and it took about a week round trip.
I'm a little concerned though, cuz you're not drawing that much current. Before spending any money, make sure all your grounds are good!