Surface morph issue in grasshopper

my aim is to construct a rough surface from data points then attach this surface on a submarine body surface


the issue is that all the submarines surface when baked have a grid except the ellipsoid part


i have performed the same thing with different surface size and it worked but i want to know why doesnt it work with 90*60 rectangle size and sigments 3599 for u direction and 119 for v direction.
try 4 second_fr low 1 -st-filter.gh (6.6 KB)
the submarine file geometry
model correct (1).igs (83.0 KB)
the data file of points
FR-Low1_st_dt_ft.txt (10.1 MB)

can anyone help me please?

image

:no_good_man:

Can you help me ?