I ran into the problem of having the ball not to follow the wanted path because it was so fast to follow the corner.
so here are few insets to handle more velocity of the ball.

Compatible with the 6 exits base tile design by alex80it (https://www.thingiverse.com/thing:3552100)

because it is an inset in the 6 exit tiles, the 60degree angle is sharper, the ball does follow the path but it does slow the ball a bit...

feel free to comment, and to like it, I'd love to get feed back and see your makes!