Nobby, Drive it the way that pleases you but don't be afraid to enjoy the upper RPM range. As King said some say driving it too conservatively actually increases the potential for problems. To me, trying to drive it a certain way so it doesn't break is moot. Since you don't know how it was treated before it came to you just follow all the maintenance and enjoy it! Regarding your noise, we need more information to pin that down.
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