Breather Question

[roosduster]

I am sure this will me a simple question to answer but can you have to many breathers on the valve covers? I know there are four holes, would it be better or worse to have a breather in each hole? I have the black cast aluminum valve covers and oil leaks out of the oil you put it in when changing it and I know the cover for that hole is not the best (came with the crate engine when new). That hole did have a metal plate below the hole when I first got the engine which I assume is to stop oil from getting out of that hole but that made the process of changing oil take way longer then it should, so I took it out. So I don't know if it has excess pressure or it is just a bad seal on the oil cover (which would not be surprising). It looks similar to http://chucker54.stores.yahoo.net/mopandbrbena.html . I have thought about putting that plate back in and just putting some holes in it so when I change the oil it will go in faster but then those same holes might just let oil out. Also I have been thinking of putting a baffled breather there in place of the cap.

Thanks