Hello, I have made some progress regarding the HP3670. 150 and 300 dpi modes are now working uncalibrated. Since this model is really close to the HP2400/G2410, it is now worth testing these models with this update. I expect the 50 dpi mode to work uncalibrated. The next step is to tune calibration and fix some motor issues at 50 and 100 dpi. Regards, Stef