I have the cases split on my '71 right now and I'm thinking of doing the front breather mod. I've researched around an found some info about it. From what I understand you drill holes in the top and bottom of the front triangle/Motor mount. Fill the area with plastic mesh. Then tap a fitting through the case. I was wondering if I have to run a PVC valve or can I just run it under to dump out? I'm running 66 frame, so, I can't just run it to the frame and I don't want tubes all over my bike. The whole reason I want to do this is to separate the oils.