I am starting to expierence hard downshifts from 5th to 4th and 4th to 3rd all the time and from 3rd to 2nd about 50% of the time. Never from 6th to 5th or 2nd to 1st and all upshifts are normal. Has anyone else experience this? I have used Amsoil since the 1st oil change with no issue until now and currently have about 15,300 miles on the VV and I first started noticing this around just under 15K miles on the odometer. I put fresh Amsoil oil and filter in about 3 months ago.