Hello. I'm kind of new to probing so I would love some input. When popping bigger males I can't seem to get any of them to show hemi penes. With one of my older males when I go to pop some sperm plugs come out but I don't see the hemipenes. With younger males I'm able to pop them no problem and see hemipenes. Attached is a photo of the probe length. I've heard with males that it should go down much further but with this guy it's like half way down the probe? This male is about 650 grams so I figured it would be a lot further. Any input is greatly appreciate because I'm afraid I've been sold a female and not a male. Any input would be greatly appreciated as I'm new to this probing stuff!
https://i.gyazo.com/4b815f9d75e45d08...1852588b2a.png