Print with your lowest nozzle. Worry about leveling both nozzles later.
Measure your filament several times
Kapton or PET tape
Apply abs slurry to a paper towel and let it dry.
Then, wet the paper towel with clean acetone and wipe the bed when cold.
This will apply a super thin abs film to the print surface.
S3D
Turn skirts on and double them.
Adjust the bed while its printing the skirt.
Then try to peel the skirt with your fingers, If the skirt sticks well, then you know your bed is level.
With ABS slurry you can lower your bed temp to 80 degrees.
Lower your first layer height to compensate for the first smashed layer. That should reduce the bubbles on the first few layers.
Increase first layer extrusion width to increase adhesion
Trim off the bottom of the bottle or replace the fillets with chamfers to reduce the overhangs.
To combat shrinkage, print ABS at the lowest temp possible… This can be found by heating up the machine and manually feeding the filament while its heating up. Once the filament is easy to feed manually, note the temp an print with that. ABS on my machine is around 225-235.
Consider using PETG filament. Prints like PLA but is stronger than ABS
To combat ghosting.
Lower your print speed to around 40 or less.
Print a Nema 17 motor found of Thingaverse, run the fake stepper motor to reduce weight.
Turn acceleration on via the LCD on the machine
Meshmixer, a free program, may have better supports for this application. At times they can be difficult to remove.
Good luck, I hope this summery helps.
