(ET) Lost key

["Christopher Zach" <czach computer org>]

Well, this afternoon my three year old son hid the key for my E20 somewhere
in the back yard (ie: it's gone).

And of course, it was the only key. Questions:

1) Did all the ET's use the same key blank? Can it be gotten anywhere
nowadays?
2) Did all the ET's use the same key pattern, or was each key unique?
3) Does anyone have a spare E20 key they could sell me?
4) What would be the ramifications of simply bypassing the key switch? 
Would
the tractor always draw current?

It's an AA model.

Sigh...
Chris