From what I can see I have an under extrusion problem.

From what I can see I have an under extrusion problem. The rectangle is 100% infill the fish is 50%, I have 5 top layers of .2 mm my filament is set to 1.74. Filament seems to flow smooth when I heat the nozzle and manually extrude. My question is should I change my extruder multiplier? And if I do, what other stuff would I need to tweak?

No I have not, is that something you do on kossel printers?

Never mind, just looked it up. I’ll try that thanks @Mark_Ellison