Burning was fun indeed. 1/2 stop = 32 secs.
I know developer is not exhausted yet, since one print came really well after 2:30 mins which is normal for ECO 4812 developer.
I will test again with fresh developer on coming weekend and see how it goes.
Vario Classic seems slow paper @Grade 3 it is ISO 40 where as it is ISO 160 for MCC.