Time to see the trans doctor

It has been almost a year since we brought the Cummins home from Waynesville North Carolina.  The transmission has done remarkably well pulling way more than it had a right to.  Our plans are to head up north to Michigan via I-77 into West Virginia.  Having traveled that way more ties than we can count on two hands, we are all too familiar with its steep grades.  Without an overhaul, we just do not think the Cummins will make it with 12K pounds strapped to its back..