the last unit I got on a rush job...I too found that the tape would not stick to the lace..I washed it before the cut in and while it was being cut in.. the tape would not stick...It must me something to do with the lace or the new units...with the round threads going through...I have sent it to Debbie for a hair add and a few other things...so I will find out how the tape will stick when I get it back...it sticks to the head fine it's just the lace. Cheers