I have been playing with my Dunlop MW 95 size 3 with 2 replacement grips and 1 overgrip. But the rounded handle and the mushy grip started to annoy me. So I decided to do the build op trick with 8 pieces of 2 mm balsa wood. Glued on with contact glue. I even built up the butt cap. Afterwords i finished with Plastic Padding, sanded it, put on 2 layers of varnish and 1 layer of gaffa tape. Then it was ready for a overgrip. I am not sensitive with balance, but will maybe adjust with lead in the handle. My conclusion : It is possible and it is time consuming but fun.