I'm going to take a trip which will require pulling a trailer behind my 92 Voyager w/ 3.3. I may have to travel down and up some steep hills and my question is: If I'm in 3rd and travelling between 30 and
35 MPH, can I manually move the shift selector from 3rd down to 1st without damaging these sensitive 4 speed trannies??Thanks for any and all help!