So I was having trouble starting my bike. I could clutch start it but it was just wizzing if using the electronic starter. Took it to a mechanic who promptly said I needed a new starter clutch. $600 parts and labour. Ummm cant afford it sell me the starter clutch and I'll do it myself. I'm a little handy but have the manual and feel that diagnosis is half the battle. So I got the cover off. As I was removing the rotor bolt it just came off. I had been prepared for a fight as the manual says you need a special tool as the rotor is on a tapered crankshaft. Anyway it just came off. Here is what the crankshaft looked like. Inside the rotor looks just as chewed up. Can I somehow sand, grind put a paste or something these so they will grab. I threw it all back together and tightened the rotor bolt real tight but it appears that it wasn't enough as the battery is not charging and I can't start it again. I checked the starter clutch it's fine. $200 wasted there. 400 saved. Cheers for any advise.