gaps. inner perimeter or dome shape

[palawanisland]

any tips / advice / suggestion on how to improve print / reduce or remove gaps.

picture 1:
dome / curve top.

picture 2:
a. 2 shell, 1 shell did not attach properly.
b. 2 shells did not attach properly to infill / top.
c. lots of gaps on inner perimeter top. but inner shells looks ok.
d. minor gaps on inner perimeter.

when inner perimeter are square. there are lesser gaps.

[JoeJ]

Increase your infill outline overlap percentage by about 20%. I would also increase your top solid layers by +2. Finally, you may also need to increase your extrusion multiplier by ~0.05, but it's hard to tell without more tests.

[palawanisland]

old over setting : 20-25%
old multiplier : 1.05

new setting :
overlap : 30%
multiplier : 1.10

change a bit infill.
20% / 60% / 100%

100% no gaps, but top layer fells rough. i think too much material.