Four 50gb BD-Rs down the drain with LG BU40N

[AbsoluteMan]

Having a very sad start to the weekend. 

Not managing to write an ISO to a 50gb BD-R. They are RITEK-DR3-000 BD-R DL 50GB (Inkjet Printable, 1-6x rated)

Drive: HL-DT-ST BD-RE BU40N
Firmwares Tested: 1.03 (stock), 1.00 (downgraded)
Software: ImgBurn 2.5.8.0

Settings Tested:

Write Speeds: 1x (rejected), 2x, 4x, 6x
OPC: On/Off
BURN-Proof: Enabled
Lock Volume: On/Off
Link Size: 0 (default)
Write Type: DAO/SAO
Best Result:
Firmware 1.00 with OPC enabled at 2x reached 54% before layer break failure.

Conclusion:
RITEK-DR3-000 is incompatible with LG BU40N at firmware level. Drive cannot calculate correct sector addressing for layer transition on this media.

Anyone have any advice for me?