The thing that holds me back the most is lack of good effective tools to use, lack of good sufficient lighting, and my old far-sighted eyes that make it so difficult to see what the heck I'm looking for in there. I've been using an old caponizing kit but don't like the tools, you need 2 hands to set & clamp them and that's inefficient. And I really need some good magnifying glasses or something to help me see, and a nice bright light I can aim right in the incision. Or a nice young helper to work alongside!
These 10-week-olds had testicles the size of dry navy beans, I couldn't imagine trying to find ones the size of rice grains.
But it's really not that difficult once you learn what to do. I operated on mine at the kitchen table, up on a plastic milk crate. I zip-tied their wings & their legs together, then used bungee cords to hold them to the crate and stretch them out. I'd even put a child's sock over their heads to keep them calm and in the dark. I had to make incisions that were about an inch long, and would use a dab of super glue or a stitch or two to put them back together. I did that with the cut in the skin, not in the abdomen.
Did you get any with wind puffs? Ones whose sides puff up with air for a few days after surgery? Mine did, and I'd have to take a needle or razor point to deflate them.