@Jedi Master Yoda
Having similar bad TRT results with Ty +R burned @ 12x and bitset to Dvdrom in Nec 4551, the Nec's TRT is perfect.
My Liteon 5232k combo drive chokes up at 10x-12x.
Yet the Liteon 5232k does a great 16x TRT on Cmc mag E01 burned @8x and bitset in Nec 4551
Burning the Ty @ 8x made no difference to TRT results in the Liteon 5232k
The Liteon's firmware is omni patched to read all media @16x
Here's hopeing the liteon is just being fussy, since its original firmware limits dvd+r/dvd-r to 8x max