I am currently playing with the Joola brand 1996 Olympic table tennis table in our school. The ball (40+) is played very fluently and quickly on this table. The problem is that when I play on the new tables of stiga 30 or butterfly, I feel that the ball stays very slow on the table. Even though I hit the ball with all my strength, I think it wasn't going fast enough. Do you know if the structure or surface of the tables has changed over time?