How important is the process of spin testing your arrow with the broadhead you intend to hunt with?

I purchased the Red Head Carbon Maxx, which are reportedly made by Carbon Express and are advertised to have straightness of .002 and w/in 1 grain of each other. Last year, I spun tested all my Bemans and ended up with 3-4 out of the dozen that were perfect. They became my hunting arrows. This year, I went for the lighter, faster and straighter arrows by Red Head and I only got one of them to spin true. I used the same broadhead used on my Beman, which still spins true.

If you tell me itt is very important to get the Red Heads spinning true, I need to buy new arrows or see if Bass Pro will take them back, which they might. They aren't wobbling all over the place, but there is a distinct wobble as compared to my Beman. By the way, I am not tuning or adjusting the Muzzy's (three blade, 100 gr) but simply screwing them in until they seat.