This isn't that much weight we're adding at all, is it? If we're going by the quarter inch Gamma:
4" x 4 = 16"
1" = 0.25gram
16 x 4 = 4gr
4gr = 0.14oz
I actually only used 3.5" so the total weight added was only 0.12oz yet the extra stability I got made a very noticeable difference, especially on the volley.
And I didn't really notice much difference in SW because I took off leather grip and am just using an additional overgrip instead.
I should've done this a long time ago.