I have an old set of M/T valve covers that do not have any type of baffle over the breather or PCV hole, and as a result I have oil blowing through the breather and running down the valve cover and the motor. The easy fix would be to buy a new set with baffles, but I'd really like to keep these if possible. I had them ceramic coated so they look nice, plus I'm short on $$ since my motor is just getting finished up. Is there any way to add some sort of small, flat baffle inside to partially cover the holes? I can't see how I could drill and tap into the cover to hold a baffle in place since the cover is pretty thin, but I think there may be bosses cast into the cover that may help. Is there any other type of breather system I could use? I can't plug the holes and run without a breather or PCV, could I? Any suggestions would be appreciated.