RE: Wisker " B" question ?
Droptines, I have only been shooting feathers through my WB. When I bought my arrows they had an aggressive helical and I don' t know what kind of feathers. But they were noisy and the bisket tore them up on the ends really bad.
Then I bought a bitz.jig and fletched my own with about a 4 degree helical & Tru-flight feathers .These held up much much better but frayed on the ends a little !! And I was losing 5 fps with an untrimmed bisket.
Now I re-fletched with Tru-flights and a slight offset . I have not seen any wear on my fletchings yet = 3 weeks (I' m sure they will......but for now they are holding up great) and I picked up about 2 fps .
Good luck !!