About 25K miles on the last rebuild, and I notice the idiot light glowing noticeably brighter than usual during major power draw (brights/radio/OD pull-in). Also, ran battery near flat recently (been neglecting routine charger use). Belt is tight, so unless there is a regulator issue (?) likely new brushes are overdue.
Curious, what kind of mileage are others getting between gen. rebuilds?

6 VOLTS/POS. GRD. NW INDIANA