Theoretical cobra centers are not correct

As identified during the Engineering Run post-mortem telecon 2021-10-04 (https://sumire.pbworks.com/w/page/146399862/Commissioning%20telecon%20on%20Oct%206%202021%20%28Wed%29%203%3A30%20UTC), the theoretical cobra centers provided as input did not match those measured.

Please find the cause and fix.

Comment form rhl:

I still don't understand how this will affect convergence unless the positions are very off. Chi-Hung re-measured the centroids from the theta moves early in the run, so does this mean that we need to debug/fix that code?

It would be good to encapsulate that code in an fps command. We should make sure that we have proper visualisation of the results too, including the results of Chi-Hung's analysis that shows that the current values aren't all quite right.