Been there for sure. I found a sequence if you like that works.
1, Adjust each brake shoe at each wheel until it just touches the drum.
2. Bleed each wheel cylinder starting with the right rear, left rear, right front, left front.
3, Wait, yep wait for about 1 beer, or what ever seems like 10 minutes.
4. Try that pedal. If good, repeat step 3 and smile. If it still is soft then pull the MC and see what you have.
