Early Series 2 rear sprocket

Bit similar to the thread about the weak earlier pacemaker box, but this refers to the earlier clutch bell in Series 1 and 2.
Will be selling my Li 150 Series 2 next Spring, so I'm putting the original engine back in, which has been sat in my garage for the last 5 years. Because I'm that kinda fella, I've stripped the engine down to upgrade it to 12v electronic with a spare GP200 crank, plus replace the main oils seals and anything else that could spoil a sale.
However, when it came to the clutch, it has the old style rear sprocket with a cush type of sprung base, see photo. Stickys book says that these are weak and should be replaced. I can understand that may be true for tuned engines, but in reality and for a standard 150 engine has anyone experienced failures.

Will be selling my Li 150 Series 2 next Spring, so I'm putting the original engine back in, which has been sat in my garage for the last 5 years. Because I'm that kinda fella, I've stripped the engine down to upgrade it to 12v electronic with a spare GP200 crank, plus replace the main oils seals and anything else that could spoil a sale.
However, when it came to the clutch, it has the old style rear sprocket with a cush type of sprung base, see photo. Stickys book says that these are weak and should be replaced. I can understand that may be true for tuned engines, but in reality and for a standard 150 engine has anyone experienced failures.
