The ball manufacturers do not want to be liable for some other companies perhaps faulty merchandise. Nor do they wish to be held liable for damage to the coverstock through the application of substances that can chemically alter the coverstock composition (like super glue), nor should they be.

 

 I have had several balls crack over the past few years. With only one exception, as long as they were still in the initial warranty period, they were covered, and they ALL had grips and sleeves in them.