I have oil pooling in the bottom of the air cleaner housing. It is coming from the valve cover breather hose going into the air filter housing. This oil is saturating the air filter and I think causing it to run rich. Is this normal for these Triumph engines? Does it hurt anything? Has anyone installed a PCV valve inline with the hose? The engine was rebuilt a few months ago and has very few miles on it. I don't think I have blow by causing high crankcase pressure. I am using a Mann C1530 filter in the air cleaner housing. Any suggestions? Thanks.