LOWER FLAP CABLE LENGTH

[1311D]

Does any body know the length of the lower flap cable for a 170A. I have two different cables one measures 119 5/8" and the other is 125 5/8". The new one i just got from McFarlane is 125 5/8" part#mc0510105-105 is stainless steel. The parts book calls for 0510105-114 for stainless steel. McFarlane says is not a good number. McFarlane says for ss cable add 100 to the part number witch is 0510105-5. Did McFarlane maybe put the wrong cable in the bag? Greg