I completed stage 6, but I can't prove it because the end screen is the same as the credits screen accessible from the main title!
This is nicely done. A clean, unique look with great color coding for important facets of the level. The puzzles are simple to ease the player into the mechanics naturally, and the final stage shows the potential they have to offer when the gloves are off.
For the level of precision required in certain sections, it felt like the player doesn't have enough traction to stop from slipping off of things. It can also be difficult to predict how the plugs will react to the magnet, both in the position they'll end up in and whether or not adjacent plugs will react in addition to the targeted one.
Unfortunately I don't know Morse code, so I can't decipher any hidden messages!