Keep chart data on tick marks when using secondary axis

I have a simple chart that shows actual expenses with a line and budget with an area chart. I like the data to show up on the tick marks, so that it takes up the entire horizontal plot area.

When I add a secondary axis, the left side of the line and area charts stay on the tick marks, but the right side pulls off of the tick marks, leaving an unsightly gap. I have tried re-formatting the x-axis, but it doesn't help. If I remove the new series of data, the chart goes back to how I wanted it.

How can I get my charts to be flush on the right side again, with the secondary axis???

Thank you Andy. Can you tell me how to access the secondary x axis? I've tried clicking every which way and I can only get the primary's settings, which are on the tick marks.

Beautiful. Thanks so much.

Thank you so much, Andy!
I scoured the Interner for a solution and couldn't believe that I found one from a thread posted 13 years ago.
Hope you're doing well at the moment!