I have downloaded charts 2.5.6. The axis extents now work differently. I am really tired of playing whack-a-mole every time you put a new version out. Do you not have unit tests for this? Why do you keep breaking functionality when you put new versions out? We paid a lot of money for this and frankly, it's broken.
And no, I don't have any sample code to give you to look at. I'm busy trying to get my iPad app out.