Well, I will be ordering the parts this week. Since I needed to change my track anyways, i figured the time to upgrade was right.
If you still are interested in making the 5 tooth gears and selling them, I would certainly be interested in buying a set.
I figure that I should build on the experience of this forum and put more time on other things. As an example, since replacements for cdi's seem to be an issue, I will give a crack at designing a replacement; that should be interesting.