Well now I think the infection is too close to #6. IMO the tail needs to be amped 3/8 to 1/2 inch toward the body from #6. I bet the vet has removed the infected part well above the split. One might think that we lose more tail that way, but the loss is far less than if it should re-infect and need another amp. Better safe than sorry. He may very well grow a nice replacement tip.