Issue Title

The Maintenance hatch and muffler can only be put on the bottom layer, the tooltip should state this.

Context

I couldn't get it to form for a while.

Game Environment

GTNH 2.0.8.8
GT-PlusPlus-1.7.05.20

Misc Info

Check all that apply ([ ] -> [x] - use a lowercase x)

•    Using GT:NH/GT:New Horizons?
•    Single Player?
•    Multi Player?

Still a thing in 2.1.0.0 in multiplayer
I struggled to form the multiblock because of that missing info