Are the primary and secondary shoes installed in the proper place?
Primary shoe is the one that goes on the front - it has the lesser amount of lining material...pictures are unbelievably poor poor but it looks like you have two of the same shoe on each axle.

Until you verify this all other ideas from the masses are just a guess and dart board troubleshooting. Brake drum systems have been around way too long, this is a simple fix.

I see that no one comprehends that I just worked on a car with some one else's brake work that had the exact same problem...
OK then figure it out for yourselves.