Iíve got at Ď19 as well with about 600 miles on the clock. Iíve noticed this, but it doesnít stop me from slowing, or seem dangerous. Also, I broke the 1000 mile rule and towed my 12K lb fifth wheel a short distance in for maintenance. No issues slowing or stopping there either. I thought it was just the nature of the transmission working itís way down. Looking at my monitor 2nd to 1st is most noticeable.
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