I think you should print a little slower & turn off the fan. Use acetone-abs instead of glue. Adjust the flow in the filament settings and control diameter of the filament.
My settings for abs (e-bay 3mm black) is:
255c print-temp
110 bed-temp
3mm diameter
111% flow
Speed max 60.
Fan is off. I only enable it (on the fly)on prints that have a layer time of less than 8-10 sec. (25% fan)
I have also printed a front door for my U2 so my ambient temp inside is around 40c