Thank you! I'm so glad you liked it, and I'm sorry you experienced physics-related bugs, obviously not intended or ideal! Do you mind me asking if these were all in the browser version? The physics tick rate is halved on webGL for performance reasons so it's more prone to issues, althought rightly enough these are stull issues I should be fixing so I'll get on it :)
And absolutely, I'll add a bit of weight to the ball no problem, will see how it feels!