what can make the oil stop leaking

I get a slite leak out of my oil fill tube wich has a breather on top.. its becuase I had to grind the baffle to fit the foxbody chrome valve covers. Make sure your pcv valve is good. Its a common problem. There are little things that can be done but im not sure what yoru breather looks like. Buddy of mine with a blower car has same problem bad and used a tupperware cup.. pulled off the lid then cut a hole in the bottom just big enough for the breathers end to press into.. he thing siliconed around it sealling it up. The cup is the same height as the breather and any oil that leaks into the cup just goes back into the motor. He managed to get some chrome breathers already built like this from somewhere.
 
the reason i t leaks is becasue the hole that was cut in the valve cover was cut wierd, nad the gromet is kinda loose on it so it leaks the oil out, is there a way where i can secure the breather on there? i also have a trck flow filler tube that i would rather have on there then the breather. but is there a way that i can secrue it?, if so they would be great, i don't wanna have to take it t ocrazy horse nad spend mad moeny and let them fix it. thanks
 
Can you post us some pics? That would help me get a better idea of what your talking about. When it comes to leaks ive had them all and today my car doesnt leak a drop on the ground... only very little comes out my breather but never makes it to the ground.