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You have excessive emulsification, I would consider running 1:1 with vario configuration. Also check the skew adjustment and try to keep it as low as possible usually around 8 - 9 full revs.

Try 1 part gloss varnish to 5 parts metallic ink, this will cure your adhesion problems.:)

Its recommended to change both sensors at the same time. new style sensors were fitted standard as of s/n 202918.

I had a client who had picture framing all the time especially bad with Black ink, he changed to a one step fount from Pitman called 'Performa fount one PF CHM 206D'. The picture framing problem has now disappeared.

You should take a deletion pen and delete the non image area outside of the paper size, and see if the same area remains clean on the blanket.

What you will notice is that a job printed with FM screening will use approx 15 - 20% less ink than the same job ran with AM screening. Ink presetting curves should be adopted acordingly.

As long as their are no mechanical reasons. Usually this is related to water quality (using RO water helps), and fount additives. High pigmented ink and higher tack grade helps too.

What press and what age, we have a number of test forms and programs built in to CP2000 to automatically compensate ink presetting curves.

If this press is a perfector, check the Impression jacket is tight against the cyl.