For gods sake man, use a raster format (JPG,GIF, PNG) instead of a blasted PDF so your images show inline.....
I don't lknow the answer to your question but the first things I waould check is:
1) if your profile has a bunch of nodes in it that show up as the lines.
2) That a "liney" type of fill has been applied to the material on the logs.
Nattering nabob of negativism
2023 MBP M2 Max 32GM. MaxOS-Current