What's a "Ground Fix"? ![Huh? ???](http://www.texasxriders.com/Smileys/default/huh.gif)
The vtx is notorious for having poor ground contacts that eventually corrode causing a poor running bike. The 'ground fix' is to clean and treat the ground contacts to fix/prevent this corrosion. There are instructions in the vtxoa.tech garage.
The blockoff plates can probably be found under brand - GP German Pete products. But I can't get into HDL to see for sure.