Lambretta clutch steel plate at 2mm thickness, this plate should be used first and fitted closest to the gearbox side.
When using this plate it spreads the load on the ears so it doesnt wear, and stops it falling through the spider.
Then start to stack the clutch with either 1.5 or 1.2mm or 1mm clutch steels to give the best clearance inside the basket.
 
THIS IS NOT THE CHAMFERED TOP PLATE
 
 
Part number: LUMBP0478