wrong shoes, please help

[jerryjer8]

i am working on a friends 1988 en454 ltd he picked up recently, had one of the rear brake shoes delamanate and separate from the backing, ive ordered 3 sets of shoes and each comes in incorrect, ive tried ebc, bike master, and parts unlimited, the shoe has the correct contours just each new set is about 1/2" smaller than original, and springs are smaller, everything on the bike looks stock, i had a older kawasaki my self once and had the same rims, im at a loss and cant figure out why this would not be the right size, has anyone run into a problem like this before on these older kaws? does anyone know of a website i can get actual sizing references and schematics? i thought maybe for some reason someone may have put a different rim on this bike at some point, but had the local dealer do some cross referencing for me, and seems like the same size shoe is used on the bikes all the way up in to the 700 motors, 

 
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