I think my 727 is fried. Now I'm at a crossroads...
Well, I think this thread can be put to bed! As always, with immense help from FABO, books, videos, and about 60 gallons of Miller Lite, the 727 is finally back in the car and operating smoothly. It takes a while for me to get things done, because I work slowly when doing something I'm not proficient at, and my schedule doesn't allow me to be in the shop every day.
When I loaded it to trailer it home, the transmission was slipping pretty badly. I had added 5 quarts and have a filter extension with a deep pan. I thought that would be enough to get her going, but I was wrong. I saw a comment that
@RustyRatRod made about deep pans and how it doesn't matter if it's ten feet deep, fill it to the full line. I ended up adding a total of 9 quarts!! Shifts beautifully now.
One thing I'm confused about is the effectiveness of the TransGo shift kit. I don't notice a difference, or at least there's not a night and day difference. There was a bigger difference in the Scamp's 904 when they took out the wave snap ring, but who knows.