TFTM...I was a little "Tired " too last night
Have taken off the inner ring now, which with all the interior was a bit of a faff but got there in the end.
Next job..the tracks. As each link has a sink hole on the outer visible edge...I have to fill them
Each hole has had a blob of superglue put in..I then put the track length on a radiator and let it bake ( dry ) for a while.
Above photo is the second pass of superglue where the hole was not filled completely on pass one.
Then its level with a diamond modelling drill and hopefully VOILA
Its raining outside so it must be time to take my lad to play a football match..parents always love supporting their off spring for hours in the rain!

Hey Ho...off I go.
Laters.