More mid-range grunt for Seca 650

The Seca 650 is a tremendous all-around bike, but its one real shortcoming (as is the case with many smaller displacement inline fours of its era) is a lack of mid-range power. My only corrective measures so far have been 86ing the airbox snorkel and replacing the OEM air filter element with a cloth K&N unit. This has helped some, but I'd still like to see more throttle response below 6000 rpm. I've thought about screwing with the cam timing, but I don't want to alter the bike's overall good nature. Any suggestions?

 

There was a magazine article about running a Seca and giving it a little more midrange....
I think it was titled "Saving old standards" I'd link it, but I can't find it at the moment. Someone has a .pdf of it on their Seca page somewhere.

 

This is the old article that was refered to. I can't personaly vouch for it but I have used it to set up my own. The proof is fortcomming this summer. It does all make sence. http://www.totalmotorcycle.com/pdf/savi ... ndards.pdf]seca[/url]

 

saving old standards Lets try that again.

 

As a mater of fact this hole page has many links that you may find helpfullTotal Motorcycle Seca650