Ok, so I have not been able to take a photo of the underside:
1. The tank is freaking heavy that I worry I'm going to break something if I lay it on its side!
2. I can't lift it to take a photo because I can only pick it up from certain places on the front and back because of all the details (I don't want to damage anything as I know nothing about painting models!)
3. I always forget to ask either my wife or my 8yr old son to help.... this is my option I think!
I did, however, managed to take a photo of the whole side track profile so you can tell me if it's definitely loose or not. (I have the King Tiger now and the track on it, well the top is straight and level and is not touching the wheels the track is about 1cm or so above the top of the wheels - is this how the tracks are supposed to be?)
I still don't know how the idler works - on my Tiger, the two bolts are kinda loose... is the 2 vertical bolts are not fixed tight and wobbles - is this correct or are they supposed to be fixed in place? I need to do a video of them but it'll be tomorrow - my wife has issued me a ban tonight and i'm not allowed to touch the tanks anymore tonight.
By the way - the photos above were taken when the tank was suspended in the air between two sneakers (trainers in the UK) (I was going to run them and see how the tracks spin in the air but couldn't be bothered so took the photos instead)