The leading edges of the elevators need to be rolled. I had put off rolling the rudder leading edges so the elevator leading edges would be the first for me to role. Luckily I had a buddy come over to help with this process since it seemed to work much better with two people. I used a 1" diameter pipe to role the edges. This worked well and I only had to massage the roles just a small amount. I also learned how to efficiently bend the overlapping edges of the skins so the outside edge would not bow up creating a gap. I also used Napa 7220 Self Etching Primer on the surfaces between the two leading edge surfaces.