I want to add a PCV to my 292.I bought one for a 302 and installed it in the valve cover and hooked it to the back of my carb,(edlebrock).When I installed it ,it ran like crap and had a vacuum leak.How do I make this work?Will the PCV help with oil leaks?

55 fairlane gasser 312 /c4, 57 f100 292/c4, 52 mainline gasser 302/t10 4speed