Copied correctly but failed to work was my experience with 7935 and 7931s (ordered 7930s and got 7931). Complained and they are sending 7930s (when they get some). Like yours the 7935 reported blank but the 7931 matched except for the -31 instead of -30. That is the last variable. Not that after about two weeks and a number of starts the data did not change.







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