Adjust the trend line for the second metric in a combination chart

I am trying to create a column combination chart where the columns show the number of tickets and the line shows the percentage of tickets that meet a criteria. I have this all working as you can see in the screenshot but the problem is that I want to change the start values of the trend line so I can have it moved up toward the top of the columns more. Ideally I would like the right side of the screen to show the values for the line like the left side shows for the values of the columns. Is there a way to do this in ZD?