I took out the micrometer and measured the center pins from the AGA-T and the AGA-T2/T+
Results:
AGA-T Center Pin
Overall Length: 52.22 mm
Width: 2.62 mm
Thread Length: 9 mm
AGA-T2/T+ Center Pin
Overall Length: 49.65 mm
Width: 2.52 mm
Thread Length: 5.9 mm
I doubt the manufacturer is going to provide actual AGA-T stainless steel replacement pins. From my conversations with them, they have things made in batches and unless a product is super popular, once a run is over, it is over and they don't "go back". I.e. I tried to order more AGA's (not AGA-Ts) a few weeks ago and they told me they were gone and not going to be made again.
Still, I'll talk to them on Sunday and see what they have to say about making AGA-T spec SS center pins.
I don't recommend trying to use a spare AGA-T2/T+ center pin in an AGA-T. That missing 10th of a millimeter in width is probably enough to get you some
juice/condensation down the center tube (from
juice spatter inside the top cap).