As been said here very few 13 and below goldwings have had tranny problems.My 13 F6B needs me to give very positive shifts with my foot and they are just clunky trannys.Many including a couple on this site have well over 100k without a problem so I really do not see the worry.Also there have been 14 and 15,s with the so called upgrade that have ghost shifted.Good luck with your search.