Normand C. 
✔️ Level Z axis (to 0.05mm difference from left and right - hoping it's precise enough)
✔️ Add ABS slurry to glass print bed
✔️ Add tabs on corners of part to help prevent delamination from print bed
✔️ Slice the part in #PrusaSlicer
✔️ Load up g-code in Pronterface, heat up bed and hot end
✔️ Start print!
Print's done. One corner did lift from the glass bed. Not as much as the previous print though. It will be fine for this use.
I'll apply some more ABS slurry for the next print.