What tape are you using? It has been posted in many forums that people are having trouble with Supertape Low Profile. Some tapes have a harder time in grabbing these new thin laces. If you tried washing it and it still does not grab try a different tape. If you insist on using the same tape, apply the tape to the lace without peeling the back. Use a hair dryer and go over the tapes with high heat. Not to much, when the tape heats up go over the non peeled backing with your fingers, really pressing it to the lace. Then peel off the backing and apply as usual to your head.. I used to swear by Supertape low profile, but it just does not work with my new thin lace. I switched to walker no shine and all is back to normal.