Whisker Biscuit Tuning Using A Whisker Biscuit, Odd Vein Up Or Down?

Using a Whisker Biscuit, odd vein up or down? - whisker biscuit tuning

I have a hair out of cookies, I thought it strange to not travel so vein rose through the mustache fiber biscuits, black bars, but a friend says something else. Which is good. Simple question is a simple answer.