I've been doing tru oil on the past few bows I've made and love the results. I do the finger application, 3 coats, knock it down, 3 coats, etc. I don't know if it's just now starting to do this or it happened before and I didn't notice. But, I've been getting tiny, tiny bubbles in the coats. Will these go away when i knock it down in between every 3 coats?