My DC5R has had the common second gear crunch ever since i brought the car 3 years ago. Recently i decided to teach myself how to double clutch (releasing and depressing the clutch when in neutral during a gear change) the crunch is now much less noticeable and if done correctly, disappears all together.
Hope this helps anyone who has a similar gear crunch problem.
Down changing requires some heel-toe action, which iam yet to master.

