Normally a set of washers in either the carbs or the exhaust system.
Fucking kills the revs on the bikes aswell which would explain the flat spot!
Also if the bikes an import it has a built in restriction in the clocks so it won;t go past 112MPH (180KPH), you need to take the speedo off and take out the restriction plate if you want to do 130MPH+ Think there is a topic on hot to do it somewhere on the site!
