The increased length adds approximately one swing weight but is essentially offset by the mid size grip. The standard shaft is ascending weight (107g - 130g) while your shaft is a constant weight 120 grams- can't be sure what the swing weight difference if any but would suspect to be close to their target swing weight of D2. Since you love them they must be a good fit so I wouldn't be concerned with swing weight.

Thanks, i do love them, no concern was pure curiosity thanks for the reply.