Pic of printing problem

I'm having this problem, similar to the odd circles, but this time, I tightened the print bed, but I'm still having this weird problem with the extruder. I'm not sure what is going on, any help would be appreciated. The object prints fine, except for the rear XY corner, where it seems to be extruding too much material. The other points on the object are fine, just that one corner...thoughts??

It seems to be a combination of heat management, overextrusion and retraction. Try a fan blowing over the print, a lower temperature and lower the extrusion multiplier by 5%. Also try minimum layer time in the slicer cooling section. Try a longer and/or faster retraction.