Thanks Mick. The situation is confusing at best - thanks for taking a stab at it.

I think I understand what you're getting at. Essentially, if conditions are one way, change the secondary axis, if they are another way, change the primary axis. Not a bad idea. The issue is that I have no way of testing or recognizing what condition I am in.

When it comes down to it, I'm grabbing the min of the primary axis, and setting the min of the secondary axis to that same value. Somehow, however, on certain users' machines, when the code is finished running, they get a chart with axes with different min's.

So, I stepped into the code to investigate why. I came upon the line of code which "should" actually set the min's equal to each other. I discovered that if I put a breakpoint anywhere before this line of code, and then press F5 (having done nothing else), I get axes with the same min value. If there is no breakpoint, or it comes after the said line of code, then I get axes with different min's.

I went even further, and verified that the said line of code actually picks up a different value for the min of the primary axis depending on where/if there is a breakpoint.

I don't know if that was any clearer. Any ideas anyone?

Tyler