oil filler cap

Ok guys this is my first complete restoration. I have the /6 running. I have replaced the plugs, wires, dist cap and rotor button. I put a used carb on the car and it will sit and idle with a small occasional miss and if you give it the gas a little smoke. none at idle. The car hasn't run in maybe 8 years so I may be ok without a total rebuild, I hope. Oil pressure runs about 25 to 30lbs at idle. About 60 lbs when you first start the car. My question is the pvc vave seems clean and rattles when you shake it, but the oil filler cap has some blow by. It drops a small amount of oil from the cap. The wire mesh around the cap looks full of dirty oil. Would it make any difference to soak and clean the cap, or replace it. Or am I looking at a set of rings. Right now I''m out of work with an injury and can't do a great deal of work so I'm doing the little things.
Thanks for your help.
One of these days you just might look up and see a 65 barracuda in your mirrow.
Thanks,
Tommy