DC, if you have not modified Zonx's Experience bar in any way, there is a way to make it show it shows 100 ticks. I was confused about this as well when I first started using Fetish, but he told me the solution.
First, right click on the window and do window settings and set it to Frame Only. This will bring up a few more buttons for you to see.
The right arrow (I believe) is the button that will give you 100 ticks. If you click it, and you don't like it, you can push it again and it will be reverted.
Have fun.
EDIT: Just realized that Laff was talking about the new exp bars you are trying to put in. Sorry! Ignore this post.
And it looks to me like each VERY SMALL tick is 1%, so maybe that's how it works out.