Hello Hair Scare do you have a custom or stock piece?. Hersute is right if you have many ripples you will have to have the size ajusted. Your sysytem is probably to big. Pleats are the answer. If you do not feel you have the expertise then find a hair salon in your area and have them add a pleat or 2.Until you find a solution , make sure that the ripples are either on the sides or back. Start you attachment from the front and make it nice and tight.If this is not enough you can always try cutting in a V in the vack and then tape it together and then apply the bond. Start with small V`s this way you will not cut more than you have to. The lifting is most probably due to the fact that the piece is to big. Hope this helps. However the ripple posts will help you to deal with ripples and how to minimize them.