My last Mk 2 gti used to have the 2nd gear crunch (only when cold) at 75,000 miles. My sisters started at about 90,000 miles and my current one at about 100,000 miles. Mine has now covered about 180,000 miles and its no worse than it was at 100k - as others have said, it clears when warm and in fact if you do a careful change when cold, you can avoid it altogether - you just get used to it.
Don't know if that helps.