Hi Wayne,
I am Dave, I will help you with this.
In the latest feature update (Moment 2) Microsoft re-programmed some of the Taskbar and the registry hacks that previously worked and the 3rd party utilities that previously worked to re-size the taskbar no longer work.
The registry entries are no longer checked, so the only way to resize the taskbar going forward will be if the developers of the 3rd party utilities are updated by their developers.