Motorcycle Repair: rocker box leak, rocker boxes, rubber gasket

Question
Hi Johnny
It's bob again. You gave me some pointers with a vibration problem before, in an S&S 113 CI SA EVO type engine.  I have another problem now, same engine. I had an oil seep out of the front rocker box cover. I found that the middle rubber gasket was torn . When I went to the parts place to get a new one The guy said that some times the middle part of the rocker box cover warps. I put a new gasket in at about 200 miles. The motor just turned 600 today and the seep is back at the same cover. I did not take covers off yet. I know that sometimes not enought breathing can cause leaks. I have an S&S air cleaner that has the little "Y" hose off the heads to the back of the air cleaner. Is this enought air for this bike? Could that have blown the gasket out? If so what breather would you recommend or should I go for a rocker box cover? Where would you go first?
Thanks again bob  

Answer
HI Bob
 First off are these S&S rocker boxes? or Harley Davidson rocker boxes? or after market rocker boxes???  2nd never run head breathers into a y or run them into the back of the carb air cleaner.  run two hoses with Krankcase vent one way valves from each head breather. JOHNNY 623-587-4533