[nuff]

Broken tooth? Was it used for stunting? a lot of F4Is are. I would replace it as soon as possible. On bikes it's a safety issue. The white grease isn't lithium, it's wax. I don't like it personally, it doesn't lube very well. But some people do since it has less fling. I've heard about Dupont and it's another good choice. Also make sure that your chain has the right slack, it shouldn't be too loose or too tight. You service manual should tell you the recommended range.