Not You Average "Clunk"
Before I catch any eye rolls or witty(ish) jabs from you veterans, rest assured I've made ample use of the search function and ye old YouTube.
This question isn't about the Neutral --> First clunk - I love that clunk.
It's about a slightly more subtle and confusing clunk that doesn't always show it's face. Here's when it can happen:
Say I'm pulling into my driveway and am coasting the last dozen feet (yards divided by 3 for those across the pond). If I slowly let out the clutch, there will sometimes be a clunk. Or sometimes at idle waiting for a traffic light or in the morning before I drop into 1st and go, if I give it a quick throttle blip, then on the tail end of the blip (as the revs come back to idle) there will be a clunk. Both these clunks are not as audible as the loud 1st gear clunk but they strike a similar tone.
FYI I also adjusted my clutch cable so I have about 15mm of slack so I don't think its that.