Zing the frame...where to cut

[ooimpalaoo]

can anyone on here give me an exact measurement on where i cut the frame to Z it? ive looked at every Z page on here and nothing ....been all over the web nothing...one of you has to know where to cut this frame please help i see a few people asking the same thing and everyone tells them to search it ...i did and from what i see so did most of the other people...there must be a measurement from one point to another please help thanx..i only want to do this once.