727 Rebuild Blues
Go back thru it; the only thing you have to take off is the front pump and the input shaft and what it's attached to, check piston rings and sealing rings.
At least you air checked it, more than I did my first few rebuilds. I had a hard road; in and out from under the vehicles. Yeow.
Keep your head, take your time, don't rush, you'll get it done.