Hi all, newbie here. I've had my 30w fiber laser for 7 months and recently it started engraving a double image/ghost image. It does not do this everytime, but it is starting to do it more than not. I've reached out to the company and they said they are having their 'engineer' look into, but it's a Chinese company, so not sure when they will get back with me. Here are some images: https://photos.app.goo.gl/tkbPlez7KstPMk972 Anyone else had this problem?