I've found that once gore-tex is shot it's time to replace it. Gore-tex is a laminate. The spray on crap doesn't do anything for the Gore-Tex, it's just to recharge the DWR coating and typically doesn't do as good a job as the original coating. 5-10min in a dryer set on a warm, not hot setting does a pretty good job of giving the DWR coating a bit of life.
Last edited by tdbob; 08/16/18.