It is great to hear Lee that you had a chance to use your telescope and that the new mount and new guide camera are working well. Stars in your image of the Carina look really good and you resolved more stars than I managed with my gear - differences in our images can be easily spotted around the main star for example
As for tweaking, I think once you find optimal settings in PHD2 and proper balance, the mount should work even better.
Unfortunately, it seems that weather won't be good for imaging for at least a week...