I had receved your information. But I have some questing.
you 100% sure this problem come from stand cover B.? It is not come from assy beteem stand cobe b and stand cove c.? the stand cover c come from top mould 100%? Why it is olny 50% NG?. why it is not 100% NG.? because stand cover B 100% bending if you say the stand cover b bending.i hope we can talk face by face.thanks!