i have fully setup my fiber for use with lightburn, i used the EZCAD import for most settings and manually put in my timing and TC on/off settings, ive opened up a template which was originally made in lightburn and exported to ezcad, i then copied all of the layer settings i had in ezcad for my hatches and clean up passes, but it will not give me a clean engrave even with slowing down the speeds, i have also reset the jump params to the default 500/500/500/10 and the delay params to 0/0/0/100 but the results were the same 
i have attached some photos for you to have a look at and see if you can work out the problem.
hopefully its something i am missing 