Haha, that is quite a spectacular score! My best is 15 so to the best of my knowledge we both hold a world record!
I was aware of the stacking issue, but couldn't find a fix, even with Z-axis locking. Perhaps I'll try reducing the impulse and the friction to make the collisions gentler without changing the feel too much. The pegs are what makes it "Crokinole" and yes, they are frustrating!
Thanks for checking it out and the encouragement.