TECH: Fix Broken Fins

I always hear people use the term "chipped" fins when they are selling a set of heads with busted off hunks of metal. Lets call it what it is...broken fins. I was putting one of my motors back together when I realized it has a couple broken fins. Somehow I don't remember these being like this when the bike was being ridden, but either way, they're broke now. Since I have to fix them, I figured I would post some pics of the process of fixing them. I'll keep adding a post to show the progress as I go.

Here's the broken fins. The top one is completely gone and the lower one is missing a chunk.