i have had many times the same problem with the repro front brake shoes .( wlc and B.T ONLY !!!! )
in facts : the repops are FINE !
they just have a small "default" you can easyly fix the way i show you on the drawing .
each time i did this way : the front braking was perfect !
you only have to modify the diameter about 2/3 Mms . it's NOTHING .
but these 2 or 3 millimeters will change your life .
to do the job :take measurments on an old original shoe ...