Hey Peacebone,
I can relate to what you're saying (lots of it). I also am transmasculine/genderqueer and wondering if ftm fits better. I sometimes felt guilty for being somehow "difficult" to have sex with, and I had a former partner say that it was stressful remembering and sometimes figuring out what was OK with me physically and sexually. Also, she would say that she missed skin to skin contact, because I often wanted to wear a tank and/or some kind of chest compression during sex. Eventually we broke up, and I am now with someone who doesn't get stressed out by what turns me on and doesn't. In fact, she interacts with me very intuitively in ways that sometimes feel so validating, I wanna cry. Like touching the top of my chest before I had surgery with her palm in a way that made me feel like my chest was flat. Kinda hard to explain. Anyway, my point is, you are who you are and you like what you like, and there are people out there who will not only get it, they will delight in it. So try to ride out the guilt, and give yourself permission to be yourself, exactly as you are, even if it changes.
Best of luck!