I was reading current issue of TDR and on page 78 for 1999 it states "six-speed transmission removed from sale due to quality control issues". I currently have about 35,000 miles, I know only a baby, on my truck. Should this issue be a concern or just plan on getting a new or rebuilt transmission should this one go out? I bought the truck used about 7,000 ago. No problems so far. I mainly use it for towing a 9,000 - 10,000 5th wheel.