Last week I bought my first Guzzi, a 2002 California Stone Metal with just under 2,300 miles. Everything seems great so far except the clutch seems to be slipping in 4th and 5th gears under hard acceleration. 1st through 3rd gears don't have any noticeable slip at any throttle position. If I roll on the throttle slowly in 4th and 5th I don't feel any slip but when I get on it hard the engine just revs with very little acceleration. Is there something I can do to try and remedy this or is my new two wheeled obsession going for an extended stay in the shop?