In an earlier life I was operating a C310R in a remote location, in Northern Australia. Every 5-6 weeks the aircraft was flown to a maintanence facility for a 100hrly service/inspection.During one particular visit the the E&I tech (cone head) elected to balance the load sharing of the two alternators,from memory there was a 5-10 amp bias. Five days and $3500 later, the issue was resolved, however the tech had no idea what the problem was he simply replaced components. Interestingly the 5-10 amp bias remained.
