I do not have proof yet but I feel something is wrong and or someone is injecting bogus shares into the system. I am mining dash. Have close to 1th by myself.  I was previously getting .11 - .20 dash per block found. Usually more towards the .20. . Lately I have been getting .02-.09. Yet I am clearly providing 1/10th of the shares according to the stats on the site.  Can someone look into this?