I've been looking at the demos and messing around with them a bit but I have been unable to figure out how I can control the dotted "guide" lines that are in the plot area that correspond to the major axis ticks. As an exercise I've been trying to take one of the examples and completely convert it over from left axis to right axis use and would like these "guides" to track the right axis major ticks. They are always tracking the major ticks on the invisible left axis since I have no idea how to change them. Just probably haven't looked deep enough into the documentation to find this. Any insight would be helpful. Thanks.