People tend to check in during these times:
I hate hate hate this train. It arrives erratically, following it's own mysterious schedule.
If entering from Bedford side walk to center of platform
You could transfer to the B44-SBS
If you exit on the Bedford Ave side, you'll find a KFC. If you exit on the Nostrand Ave side, you'll find a Dunkin Donuts.
Use be called the "GG" train and use the middle track @ nostrand & Bedford.