Back to the track sag story, I'm looking through
Schiffer Military History Volume 37, Panther, and more than half the pix show the tracks touching down on the 4th set o' wheels (2nd set o' outside wheels). I reckon it really just depends on the physical situation the vehicle was in at the moment the pic was snapped, as well as any number of variables at the time.
As Jon said, it'd probably be best to choose a particular vehicle you have references for and go with that.
Or just go with what ya like!
On the Academy 1/25 Panther G: it is unfortunately just a refurbishment of their previous Tamiya copy, with some added G-specific items (upper hull, mantlet), and some very disappointing vinyl belt trax (poorly detailed and very stiff). I had a good rummage through the box the other day, with the intention to buy, but I had to let it go. Too bad, too...woulda been nice to have a G to go with my ol' A and Jagdpanther.