I think my 727 is fried. Now I'm at a crossroads...

Last time it was run in neutral/park was a few days ago when I loaded it on the trailer to take to the shop. I placed in neutral to check the fluid, then ran through all gears as I topped off the fluid.

Unfortunately I don’t think I have any of the fluid left, maybe I can find a partial jug at home. I’ll try that experiment if I can find some.