Trophy Ridge V-Max Rest - Allen Key Size

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Does anyone know what size allen key is needed for the trophy ridge v-max rest adjustment? The larger key needed is a 5/32 which unlocks the adjustment, but I cannot figure out what size for the smaller one. I asked trophy ridge but they just told me what size for the locking bolt and did not respond when I asked for the smaller one. It does not fit any of my allen key sets so I am guessing it is something uncommon.