Im having the following problems with my printed objects:
bottom.jpg
The bottom layer on all my prints are not filled in all the way.

IMG_3210.jpg
The top layer is even worse than the bottom layer.

Im printing ABS at 250 with the heated bed at 110. So far ive been adjusting the Z endstop height but that hasn't shown a difference. Could this be a bed leveling issue?
Also I calibrated my printer using the method shown in ZennmasterM's youtube videos.
Thanks!