Swamping out the crank pulley and the boss / spacer came out and didn't get aligned correctly on the reinstall. Need help on the parts list. We're ordering a new bolt, o-ring, and boss but we're not sure what else we will need up to the sprocket. In the pictures you can see the back of the boss damaged at the keyed opening. At the sprocket it looks like the key is the piece at about 10 o'clock and it's also damaged. I think the sprocket is good, is that little piece the key #E50506? and is the shiny metal ring behind it against the sprocket a separate piece or part of the sprocket?
Anyone who has any additional information please help, thank you.