Won't be too long before she's back on track...
Not really knowing much about this A2, will it be oil or coal fired? And if oil fired will it have the round tank or a square tank? (if a square design was ever used).
Both cylindrical and rectangular tanks were used on oil fired A2s. But 986 will be coal fired I believe. Seems odd to me but no doubt there are reasons.A2 986 was oil fired with a cylindrical tank when it last ran, but it's been converted back to coal. Cheaper to burn high quality coal than oil (even recycled sump oil).
The oil burners got square tanks when they were first converted (off the top of my head I think it was in the 40's). A number of A2's later recieved the ACN tender with the round tank. A2 986 was one of them.
Just had a look at the photos amd to me something did not look right with the valve gear.That would occur if the driving axle was rotated through 180 degrees in a horizontal plane.
Compare the following photos:
https://www.flickr.com/photos/78379788@N06/17638552203/sizes/l taken on Saturday,
with this one http://www.victorianrailways.net/motive%20power/a2steam/a2steam1.html taken about 1960.
It appears the return cranks now "throw" the other way.