My RJS White Chocolate White Port is brilliantly clear but has white stuff floating on the surface. I've degassed and added two-part finings as instructed. I tried racking from under it, but the stuff starts to sink down as I siphon, and I'd lose about a gallon if I only took the clear part. It doesn't seem to be solid so I don't think I can skim it off either. Any ideas on how to clear this up?