Typically if the cover is less than 7yr old we can make a repair.  The problem with covers that are older than 7 years is that they start to get what is called Thread Rot.  This is where the threading that is holding the cover together is starting to breakdown all over.  These covers are sold as SAFETY covers and must meet ASTM standards.  In order for us to make a repair they must leave the manufactures building meeting those same standards.  From our vast experience covers that are older than 7 years typically do not meet the standard anymore.  These covers usually fall into the category of needing to be replaced.  See cover duplication process.