I already had the K&N filter conversion when I bought the bike and the stock airbox is all cut up so going back isn't an option. If anything, I will make a catch can and may do so anyways. I heard stories about the leaky stock breather and decided to go Nichols. I just installed it and rode it yesterday for the first time for quite a few miles. The old stock leaky POS was plastic and dumped tons of oil over the back of the motor. So far, the Nichols breather and everything around it is still oil free. Planning on riding a bit this weekend so I will post back here as to my results. Typically the things to push oil out is romping on it at low speed and doing wheelies. When riding mellow it leaked very little if at all.
BTW, it is even more of a concern for me because I don't have a rear fender. That way the oil goes directly on the tire
Let's knock on wood that this fixes the problem.