@MisterJumshoe I have done two things that I like better than tying a knot in the string, because the knot can be annoying if it gets in a cup under the ball. 1 cutting a piece of cork into a hexagon shape and sliding it inside the whole, because you can take a pencil and poke it to take it out whenever you want. 2 when holding tama grip have my pinky and ring finger slighty pressing on the string, so it wont fly out of the hole, but that takes a little getting used to.