How can I fix stretched out Pro-balls due to overinflating? I'm sure I'm not the only one that has ran into this problem.   I play roundnet with a lot of people, and sometimes I'll leave other people alone with my set.  A few times, I've returned to find that some well intentioned (yet inexperienced) people have massively over-inflated my spikeballs.

When I try to shrink them back down, I find that the material has been super stretched out and the ball is pretty much ruined.  I have to either a) deflate them and play with them feeling super flat; or b) inflate them back up to supermassive size so that it doesn't feel flat.  

I've tried various techniques to get the ball's material to unstretch, with zero luck.  **Is there a solution that I'm missing?**  If I'm finally able to find a solution, I'll have almost a dozen bad proballs that I'll once again be able to use! :)

\-