Just redoing the last thing on my BSD now - the flippers. Have replacement coils, as the ones on there appear factory, and are 11630's (third strongest). Just read the manual, and it lists the coils as 15411's (second strongest).
The previous coils hit the ramps ok enough, but clearly a rebuild was needed (I always replace coils now too, it does make a difference from what I have seen first hand). I searched around here and RGP and found that it appears many BSD's had the weaker 11630's from factory.
I'm torn now, let me know what you guys have if you could, and if anyone can shed light on this? I know they changed coils in production sometimes due to this and that, wondering if that is what happened here, and if the better option is the weaker 11630's.