Would you have hold piramid cue in your hands and know its diameters especially in the middle in addition its length (around 63") and the weight (25 oz as an average) you wouldn't be surprised with that vibration ...plus as it was mentioned heavy balls and so long bridge length.
What is amazing how straight my countrymen Aleksandr shoots with that bridge length in spite of that vibration;
He has such a stroke and I'm very glad to see him back. Our audience loves such characters and offensive players. Usually fun to watch even in such a deffensive game as Moscow piramid (old rules).
