Thanks gr5.
The printer is an Ender 3 and the Z axis moves in one progressive direction, up. The nozzle is then moving on the X and Y axis.
Just to clarify the image 2340 is a profile picture (of the vertical) where the slot or grove ends openly. But, it does show the crowding or over extrusion very well.
I will check the Z axis and clean the screw, but my take from your observation is that there is likely an over extrusion problem I need to address. Is that correct? If you have any suggestions where to start the process of elimination in the Cura profile, that would be fantastic.