We only chase after high d9 conversion.
High d8 runs are more like an accident.
Happened pretty often, but I can’t give you exact numbers.
If you scale the method from this paper, you should get high d8. Your solution will turn blood red.
Its a waste of ptsa and I give no guarantee, as I only made one 10g batch.
Others here know it a lot better, but keeping the temp below 40°C will solve your problem with red color.