You are pushing those cards too hard with the overclocks, most cards don't run with clocks too high.
I get over 510 sols on my EVGA 1070 Ti with these settings below with the temp at 70c using the zm miner.
Set the memory to -303 and the core to +140 and power to 85 - 90.
Lower your overclocks and keep the fans above 90% to keep them cool.
I was seeing 509 sols/s at 70% power with +200 core +700 memory on my EVGA SC 1070 ti cards using EBWF - I think DSTM was a hair higher at that setting but can't remember for sure.
They also run cooler than at 85-90% power with lower fan settings - 56C at 52% fan when I was testing that setting in an 80F ambient room with my standard Afterburner fan profile.
I don't have any of the MSI blower models, but I do have a pair of ASUS (one 1080 ti one 1080) that are a very similar design - they DO run quite a bit hotter than any of my "fan-type" designs, but it helps a lot to remove the mounting bracket for better airflow.