Time Series Chart - forcing the X-axis range and grid offset

[Transistor]

I've a couple of problems:

By default the Time Series Chart uses the first and last values of the first column of data as the range for the x-axis. I want to display a full 24 hours starting on a particular hour (typically midnight or 8 a.m.).

1. How can I specify the x-axis range? (I've fooled it by adding force24HourXAxis series with two points (startTime, 0) and (endTime, 0) but this is now showing up as "Timestamp" on the x-trace and I don't want that.)
2. The gridlines are offset by half an hour. The XY Chart has an offsest function to fix this. Is there one for the Time Series Chart?

[zacharyw.larson]

Mine are all like that too.
Maybe some are worse since I used discrete steps for some graphs.
8.1.19 is the version I am using.

Either way though, it is offset.