82 Shovelhead oil is coming out crankcase breather how to fix?

I renctly got an 82 myslef, and the guy I bought it from stataed that if it is not started about once a week, that there is a spring and a ball bearing that will stick open, so when you start th ebike, it will pour oil. He's only fix for that was to get onit and ride, he said in afew that the spring will unstick after it has heated up, and the leak will stop. During the same time syn oils came up in the discussion, and a few others had heard where chaging to complete syn oils, solved the problem for good. Unfortuanly I have no backing for these statment sonly Words of advice, good luck to you oh in case you were wondering it seems that royal purple syn was the hands down favorite between the guys at the discussion, there again I have yet to try it, or have had to try it.