double superimposed rangefinder patches problem

double superimposed rangefinder patches problem

When view through viewfinder on kodak signet 35 , the rangefinder patch appear from 2 triangle 70% superimposed but slightly shifted horizontally on left side.I could not discern what would cause one triangle to split into two, though I suspect it's a a misalignment. What area should I be inspecting?.I wait for yours ideas.Thanks.