Just got in from a nice drive.
Not long into the drive, I changed from 2nd to 3rd and heard a loud pop. Thought something had broke or something, but everything appears ok.
Anyway, I heard it twice since. Both times changing from 1st to 2nd. Once from a junction, another after setting off letting a car by. Don't know how I got it to make a loud pop, but I'm sure I'll figure it out