Bleed them both forwards (furthest away first) & backwards.
Make sure all your connections are tight too.
You'll get there. I did a full brake replacement incl all cylinders (& master, pipes, flexi's & new shoes) & had to do exactly the same. Mine was made worse by using silicon fluid! It was up on stands for about 4 days before I was confident that it could be driven.
Make sure you bleed them as a "two man job" (a "pedal pusher" reqd) those ones with the non return valves are not as good as the marketing bumpf says they are in my opinion....
Adjust the adjusters up so that they are very tight then back them off to where you can just about turn them by hand with a real struggle, will help them bed in quick. Also file a "leading edge" onto the front of the new brake shoes (basically break the corner with a file)...
Good Luck
