Normally there is an option to adjust the KDE panel height but this is missing in SuperX 3.0. I understand there is a workaround for this and would be grateful to know what it is.
I am making a tutorial on this, will post shortly.
I made this tutorial: superxos.com/blog/2015/03/how-to-increase-the-height-of-the-panel-in-superx-3-0-grace/
if it solves your problem, let me know, comment on the blog post as well so that other people who reads it, get to know your feed back.
Thank you very much. This works for me and presumably everyone else too.