Help with valve covers

theyre probably hanging up on the intake...check for clearance

Yes check them for hitting the intake.

The best gaskets are the MP grey rubber with steel core ones with aluminum valve covers. Pricey, but I had a set on my barracuda for nearly 20 years with the harder to seal lumpy cast iron heads. Only reason I don't still use them is I changed valve covers.

http://www.summitracing.com/parts/dcc-5249581/overview/