I don't mean to say this. However, spare me the bulls*it on this. The 103 has no business servicing Fountain Avenue and the Brooklyn Postal Facility.
That's the job for the current routes: B13, B14, B15, B20. Maybe the B84 can make that stop also it serves as an unofficial Spring Creek loop.
Years ago I remember taking the BM2 by request to Ashford and Cozine. Once the took over, all bets off for the BM2-East New York service now being serviced by the current BM5 to Spring Creek-Seaview Ave aka (Old BQM1) service to Canarsie-Seaview Avenue-East 80th Street // Rush Hours.
Peep the reality to this situation: The travel time between East New York and Downtown Brooklyn. On a good day 2 hours via the 103. (Not reasonable)