What do you found far from good value ? CLK isn't 0.9 normal value ? and RI 1.8 ?
Yes I've only one hash on this conjtrol boad (its my test board)

The value that you mention above is not far from the recommended value so it should be a good signal.
Do you think that the control board or the fan is fine?
Would you mind to try to run the miner with the two hashboard?
Copy the kernel logs again and post it here maybe we can see some hints under that new logs.