title: Getting ticks on same horizontal grid for plots with different scale
body: <p>This <a href="https://matplotlib.org/gallery/api/two_scales.html" rel="nofollow noreferrer">site</a> describes well how to draw two lines with different scales on the same plot.
  However, the y ticks are not aligned as you can see in the following picture if I draw an horizontal grid across.
  <a href="https://i.stack.imgur.com/CZ1IQ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/CZ1IQ.png" alt="enter image description here"></a></p>
  
  <p>Is there a way to add ticks so that they align (e.g. the 5000 on the left is aligned with the 0.50 on the right, etc.)?</p>