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The squares and circles seem to indicate a loose pen. What mount are you using and how much pressure is on the pen? When I use my pen mount its only 1-3mm past contacting the paper to apply minimal pressure, depending on the pen type
The letter seem perfect but just started in the wrong place, were those all the same job, motors never turned off in between movements?
The letters just seem to be disproportionately far from the intended location, compared to the others. The squares and circles are not all off in the same way, really just seems like the pen might be loose or too much pressure was used and you ware seeing a wobble, except the letters, they are way off.