OK, every CD scan turns out to be like this; not a straight line and more like a “zigzag”, DVD scans seems to be fine.
Plus my 4163 doesnt seem to burn +R TY 8X (authentic, TG001162) very well as I’m having mixed results, some tend to burn and then read just fine and others the drive fails to read after burning.
Is there something wrong my drive ? The drive originally came with firmware A102 then I updated to A105 and a few months ago I switched to A106 all to no avail. I’ll swap the cable for an 80 conductor one and see if that helps.