~smiles~ I am having a wonderful day. Just making sure. Are you answering "Yes" to question #5, in that you are going to attempt this on them yet again, even though you now know that the first time you tried this, they were too old to disbud properly?
The difference between using a disbudding iron that was engineered and manufactured for the job that it is doing, and an iron bolt that is heated with a blow-torch, is that the disbudding iron holds the correct temperature for the job, neither too hot, nor too cold...and continues to re-heat DURING the job, rather than just cooling off and not GETTING the job done.

However, some people don't learn from their learning curves. The supposed definition of insanity is doing the same thing over and over again, but expecting a different result.
If there is pus, it is infected. High school biology.
It's really nice to rationalize that it is "just a learning curve" instead of investing the money (for the proper equipment....even when disbudding first came into fashion over a half a century ago, they didn't use the equivalent of a poorly made branding iron to get it done!) and time (get someone to teach you how to do it RIGHT, with the RIGHT equipment, before you go off to do it your own way) to learn about the procedure.
~smiles~ And really, you shouldn't flatter yourself too much by thinking that I am all angry and huffy, and this thread is going to ruin my day. ~chuckles~ I learned quite some time ago that I can't save the world from all the idiots in it, nor save the innocents from the stupid, so I just don't even try anymore. Just making sure YOU know the consequences of your actions.
Disbudding those kids again, even if you bought the most expensive disbudding iron in the world, is not going to get rid of the horns and scurs they are going to have. Therefore, if you attempt to repeat the procedure, the only thing you will accomplish is torturing your goats.
If you are into that sort of thing....

Nothing *I* can do about it.