I created a youtube video from a blank project created with only the MK Minimap, MK Galv, and Galv's Layers plugins to perhaps help highlight the issues I'm having.
When the character moves you can see the minimap twitching/tearing as it scrolls. You can also see the tower on the actual gameplay map placed with Galv's Layers and that it does not display at all on the minimap plugin.
I hope this helps highlight what exactly I am seeing here. :)