Hi all So I just install a e3d v6 into my Boxzy printer. After I update the Repetier-firmware and PID autotune it, I can still print PLA, but I notice the temperature was 2 degree below the temp I want. So I tried other filament that need a higher temp and the heater wont reach the temp (2 to 5 degree below) and the printer just don't start. For example, I print PETG at 250 degree but the heater only heat to 245-247 degree so the job will not start. Now I can only print before preheat to 255 degree and start the job. Does anyone know where is the problem ? Thanks