I have a monoprice mini 3d printer. I tried to print something and at the top there were big gaps in the print. I have added more infill as well as added more top layers and am about to try that, but I am concerned it could be that I am not extruding enough filliment maybe? I have taken a few pictures of tje baf print as well as the first print layer to show thay i can email to anyone who asks. Please help as it is frustrating the fire out of me.