I found temp suggestions in the (flexi) icc profile details, take a look at the icc profiles your using. Flexi's oracal profile suggests like 50 and 50, and i turn it down just a bit to 45, so there is less wave in the vinyl.i also think a slightly lower fixer temp allows the ink dot to expand just a bit, reducing banding, but no one ever told me that. Are you using flexi? I set blending to super fine , and use random diffusion instead of fmx and have very minimal banding. Also enable bi directional printing.ultimately realize that the falcon jr isnt the greatest, but it's decent.hope this helps you.