Another thing about PoS difficulty.  The first five TEK PoS blocks ever (49700, 49853, 49925, 50178, and 50430) all had higher difficulty (0.003+) than we have now at around 0.002.  

Between blocks 506601 and 506602 the difficulty switched from .003906 to .000061 which seems right since there would have been a whole month between PoS blocks and the difficulty adjusted and has slowly been increasing since.  Does PoS reward adjust based on difficulty or network weight.  If it's difficulty, it should still be 40+% since it is still lower than it ever was on the pre-506500 blocks.