Bad - Monoprice MP Select Mini V2 3D Printer

[Fooom]

AutoWiz, thank you for your reply.

I have tried very patiently to adjust the bed to get the perfect nozzle height, but my efforts were in vain.
I used a piece of paper, when adjusted the 4 corners to check the gap of most of the locations. I tried to make the gap, so that the paper slips but with some friction.

What I observed is that some parts of the printer seems higher than others (check the picture attached. Red is for higher, blue is for lower). Idk why but the middle of the bed is higher, thus tighter gap. And its actually printing fine in the middle, fails only in the corners.

Im using Ultimaker Cura 4.5 and its recommended settings for the specified printer:
Layer height: 0.175mm
Infill density: 22%
Printing Speed 30mm/s (originally was 50mm/s) (also tried 20, 10)
Line width: 0.35mm.
And so on.. Not sure how to adjust, maybe the bed can be replaced? Although it doesn’t look bent.

P.S What do you mean by nozzle diameter in the slicer settings? (couldn`t find it in the search box)

Kind Regards,
Arnold