It's not a settings problem, it's a problem with aging components inside the printer.
This
is an issue with bump pads on the three solenoids/clutch electro
magnets like these:
Arrow points to a pad.
They are made of sort of a spongy rubber, which decomposes over time and becomes soft and sticky. Being soft they get compressed, causing the metal levers coming
into contact with the solenoid core and as a consequence being released too slowly.
The solenoids are located on the right (button & lamp) side of the printer. After removing the plastic cover, looking at the side, on the left there is a control board, which needs to be unscrewed, connectors detached (you won't reconnect them wrong, each is different) and the board removed. Under it you will see two of them and a third one almost hidden behind a moulded plastic cover, which also needs to be removed.
Unscrew two screws holding the first solenoid, scrub away (using a knife) the pad and any residual adhesive, and then find some cardboard that is ~0.5mm thick (needs to be dense, not easily compressed), cut out suitable rectangles, and glue one down in place of the pad using contact adhesive for example.
Screw the solenoid back in, reconnect it and unscrew the next one, doing the same repair.
Repeat.
Note: one of the solenoids has a two-sided lever, and has two bump pads; they both need to be replaced.
Keep the thickness close to 0.5mm; if too thin, you'll get a large margin again; if too thick, printing will start at paper edge or even beyond.
This worked for me beautifully, and is based on a writeup by user BennyFu
I used pieces of cardboard 0.55mm thick (according to my caliper...), and pressed them down firmly to get good adhesion and some initial compression to get closer to the 0.5mm optimum.
Please come back and leave a rating/testimonial if helped or post a comment for further assistance.
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