drum brakes

I recently installed a set of aftermarket front brake shoes (EBC) on my R75/5. The result - hardly any brakes. After taking the front wheel out I noticed that only an area of one inch long and 1/8 inch wide on the inner side of both brake shoes were touching the drum and that in the center part...

I inherited a 1972 R75/5 that my father used for the last 20 years as his winter commuter with a sidecar. I took the sidecar off and am slowly going through things. I can't seem to get the front brake pads to touch at the same time. I pull the lever and feel one bad start rubbing but it then...