Mac.

I take your point, but in certain circumstances it can work and be a useful technique. If the track is a fast rhythm, the pitch of the hard attack is what's heard as the note doesn't have time to drop before the re-strike. If the guitar had been tuned with light picking, the resulting rise in pitch can produce an unwanted effect. Dropping the track by 2 to 3 cents can improve it. It's most effective where the track has been copied up from short sections of hard playing.

We've used this technique with some success over the years and to the satisfaction of customers who were surprised at the difference it made.

ROG.