After I posted I actually went and browsed Fruilmodell's website and nary a A7V reference did I see. I think the problem with the OEM
tracks isn't really the tracks other than they're so small and therefore the material at the hinge points miniscule. The pins supplied actually
have a sharpness to the cut ends which when pushed into the track links actually cuts the plastic damaging the integrity of the link weakening it and
making it susceptible to breakage. That hadn't occurred to me until I really looked closely. In hindsight it could have probably been largely avoided
if one used different pins or carefully cleaned/ filed the end of the supplied pins. More tedium heaped on an already boring assembly task....

Jerry