I cannot figure out how to make the screen fit. Can you help me?

Check the overscan settings on the tv

Change the aspect ratio to picture. Refer its user manual for details.

how tight does that unit fit into the space, buttons may be on a bind

You have to enter the picture settings, by normal menu access, and should adjust appropriate aspect ratio there.

Go to settings, and change format to the suitable size (by zooming in/out)

If the set has a aspect feature it will only likely be on the remote that came with the TV. Don't waste money on a universal which will not do that.

Hi, the wires have odd shaped pieces of metal attached to the ends, these are the wireless aerials. They fit in the top of the screen. If you lay the cables in the screen casing as they naturally fit by length around the outer edges of the LCD panel you will find the aerial ends are just about correctly placed and you will need to figure out the angle the aerials fit in the plastic casing. Once done refit the screen front cover.
From Steve at Olive Country Computers in Spain.

If you go into the normal game screen it will load into the full game. If you just use wii fit plaza it can be harder to get into it.

try formatting the phone

If the screen is still working the go to a Photo store- Jessops - they sell LCD Screen protectors. Like extra thick sellotape - cut it to size to fit the screen. Should keep you going - Don't think you can do more than that your self.