Ah-ha!
Don't put any code that has a doevents in the OnDouble-Click event or you will get strange behavior. I was calling a class that changes the mouse pointer and had Doevents call in it.

Problem solved.

Hi, I have a VB app that uses the TeeChart with zooming. The native method of un-zoomig, or returning to the original chart view is to click and drag to the left. This works fine however it is not very intuitive. To improve usability, I have added so very simple code to the double-click event. TeeCh...

This really isn't rocket science. I would like to display the value of a graphed point. I see the OnClickSeries event will do that, but it also appears to display data for areas that are just on the line between points and not just for point data.

Thanks,
I figured it out eventually. Seems like it would be a little more intuitive like
TChart.ShowGridLines = false
Or at least TChart.Series(Index).ShowGridLines = False

I want to turn off the gridlines. This shouldn't be a difficult thing. I have wasted 2 hours wandering through the help files.

I would appreciate any help

Thanks.