Hello Khun Weeraphong,
thank you for measurements.
If I am not wrong there should be some measurements of S/C characteristics done as Incoming inspection and also full layout should be done two or three weeks ago in incoming lab. Do you have this measurements and could you please send it to me.
Additional point is that measurement of "nose" should be done for each nose which means 6 times on each gasket. Could you please measure these for comparison and also include this in incoming inspection plan for future.
Last point is that I am not sure how you evaluate the distance 1.7 but I do not think it is done in correct way (see picture below). Edge on left side is already around 100 microns below the top area. This should not be considered as part of nose (nozzle contact area). In this case I would say that the distance is around 1.1 mm instead of 1.83 mm.
In case of any question please let me know.