[Martyn_]

Not actually done it myself, but looks like a straight swap for the two "tangs" being replaced by wire - solder directly to copper. Personally, i'd stick a connector in the wire so you can separate body from base easily.

Leaving the chassis copper exactly "as is" would negate the need for fancy footwork with the guide gubbins.

 

[Martyn_]

You could Graham, but it's a lot to go wrong over the series. She's only going to get one real TLC pit stop in all that journey.