high water mark? when it came with exploding clutch?
or was that a different Scurra?
Using your logic MG Daytona's are junk because eventually their oil pumps fail and destroy the motor.
But most of us consider the Daytona a great bike. Bush the oil pump and ride a classic.
Scura is the last of the hot rod Guzzi's. Great motor, great suspension.
Like a Daytona, it's flaw doesn't detract from it's greatness. Fix the flaw and ride it.
M