Now to begin with, all the raised panel lines were removed and scribed onto
the model and that meant ALL of them, no fun there but most certainly an improvement over the original.
One consideration asked for was a self contained model so to speak.

In the pic, the bottom view on the right, you can see a small black rectangle,
that is the charging socket for a 9v rechargeable battery
sealed in the rear of the model.
A simple push on/off switch is installed inside the nose 'intake'.