It sounds like you really don’t want help 
Here’s a last tentative on my part. If you REALLY don’t want to open a support ticket now, you can try to print this and decide what to do afterwards :
Here’s the kind of issues I was having :
The Optics Test print before cleaning (I got the print through the form Wash which got rid of some of the flashin) :
And here’s the result after cleaning the whole laser path (including galvo mirrors, which are the ones which actually did the trick) :
