I think it’s obvious why you are getting these bad results. I have burned MCC 004 with the exact same stamper code as you (ZE6383, CMC made), and after some effort, I achieved this result with them.
Ditch the iHAS122 B and the Nu-Tech/QSI clone. Take my advice and try writing them with a quality drive, moderate speed (= 8x) and a compatible strategy (very important!) and you may just have a better time with Verbatim media.
Renesas based LGs are even better for MCC media. If anything, LG write quality remains good in spite of the MTK switch, not because of it. Samsung also uses MediaTek chipsets, and they are in my experience the best burner for this media. But Liteon DVD writers never impressed me much (although they are good readers for damaged media), their CDRW drives were one of my favorite though.