In regards to the breather that originally goes from the valve cover to the airbox. When you install a Stage 3 jet kit and remove the airbox. I was told to run an hose off the valve cover to a filter and mount somewhere around the K&N dual filters. I did this, and the breather filter smokes pretty good. How much smoke coming out of this breather is ok? When I get the bike up to running tempurature, there is a steady amount of smoke coming from that breather filter. Obviously when you are sitting still in the shop, I am noticing a bit, but what is normal?