Anyone in the North Dallas (DFW) area that can help with sexing?

I have a few hatchlings that I cannot seem to positively identify the sex of via popping or probing. When probed, they are showing about 7-8 scales each. When popped, I am not seeing any hemipenes emerge (some other clutchmates show their hemipenes properly for me.)

I am 99% certain that nothing is ruptured that would affect the probing outcome. If I had to guess, I would think that I simply am not popping them exactly as needed.

I've watched the videos and read extensively online. I believe I need a live tutorial. If anyone locally has a little bit of free time, I would greatly appreciate the help. I am in the Frisco area. Thank you in advance!