Happy4now You should read the description of the bot. This is what you get for trying to have sex with a bot made for kids, not adults
I made that F vagina part for bots that are specifically designed to NOT be sexbots.
For example I gave it to some bots that in-universe I described as military bots, as well as that MT-YC1 bot that is designed as a nurse for kids.
The concept is that those bots, if bought as a new retail bot, would not be able to function as a sexbot, but there would always be some
degenerate users that would mod the bots in order to transform it into a potential sexbot.
The way I see it, that "vagina" part is pretty much an empty slot, not a vagina, so there is nothing to stimulate the male partner. It's just a pure metal cavity not even shaped to accomodate a penis. You'd be more likely to hurt yourself humping directly on the bare metal parts than you would get sexual stimulation for it.
Also, something strange.
Happy4now, you mention the bot MT-YC1 having no implant slot? Which version of my mod are you using? If you're on the SR24 v3.1 version (last version for SR24), all my bots should have an implant slot.