Unwanted fillet variation

Hi

I’m modelling a water bottle from a tutorial. I have a variation in my fillet instead of a constant size. How can I rectify this?

Thanks
Umar!

Water Bottle|690x425

When you are making the fillet you can choose between “Rail Types” :
Distant from edge, rolling ball and distance between rails.

http://docs.mcneel.com/rhino/5/help/en-us/commands/filletedge.htm

Thanks. I’ll try this out.