Originally Posted by beernutz
I created a system to repressurize regular balls and now use it to keep my ball machine supplied with good balls.
I also use an old soda keg to re-pressurize balls. It's not that efficient.
The cold weather didn't hurt the Tretorn X balls, but as I feared the balls are soft in hand and this is why they feel heavy. More surface area hits the racket.
This is the reason I started the thread and apparently I did not convey my concerns properly.
They are still decent but not nearly what I had hoped for.