Hi, I have a 600x400 50w which had the N2 Nano controller, it worked well but I wanted to be able to use Lighburn so i upgraded to RDC6445G. Now all is working well except does not cut a solid line, it a dashed line (and no I don’t have dotted mode on). I increased the laser frequency to 20KHz and the line became dotted but increasing the frequency more doesn’t make any difference. I an only using speed of 60mm/s at 25%. When it is running you can see the amp meter needle just flickering very slightly. Can anyone advise where I am going wrong