The pathway from my engine breather to the oil separator was convoluted and tight. I decided to bend a 1/2" aluminum tube for most of the routing - had to buy a tube bender. During my first trial, my friend Mike stopped by and reminded me that it is important not to have any low points in this breather tube. So, I bend a new tube that rises from the breather outlet up above the engine. then, it is a constant downstream run all the way to the oil separator. Also had an opportunity to use my Clamptite tool - very happy with the results.