If the performance is good and your getting reasonable battery life, I'd stay status quo. There are things to try/check to maybe give a little boost. Clean the battery contacts and check/reseat the main bullet connectors. Also, check the kill switch blade connectors for good bite. Anything a little loose along the main current drive path can cause voltage sag or contribute to it. I really don't think you have any major problems at this point unless your noticing a performance issue.