Won't the old beak Keratin still grow and deform the new plastic beak, or even push it loose eventually? Anchors will probably hold for awhile but Keratin is like fingernails and it'll keep growing underneath. Depending on the pressure it exerts, it may become impacted like wisdom teeth.
I'm familiar with this. Corny or cornball was my childhood nickname. not my fault though, I inherited Cornelius for a last name. by the way, the original Cornelius was a roman general who offered to adopt any legionnaires that finished their stint in the Roman army so they would be official Roman citizens. That was a big deal then sort of like becoming a 1%er. My regards to all you other Cornballs: Nos sunt verisimile non distant cognati. :)