I cut mine. However, never after 4 weeks, there is too much chance of heavy bleeding after that age. I would call my vet after 4 weeks to take care of cutting him. I prefer cutting to banding personally. They seem to get over the ordeal rather quickly.
We use the Burdizo method; quick and from studies shown to be the least painful method. The bucklings are still too young but we just finished 2 of the ram lambs at 4 weeks old. If you aren't familiar with the procedure look at Fiasco Farms web site - she has a very good tutorial. We use Rescue Remedy an hour before and then another dose during.
We band our but never before the age of 6 weeks. I could not imagine banding a buck at two years old. I had two bucks that I wanted to see how they were going to grow. I took them to the vet, paind $25.00 each and he did it. They were 9 months old. OI would thing banding a goat that old would be WAY to much stress on them and pain.