I think that while you did have a bad experience with a T before, I feel like telling this T about your concerns is really important. I understand that it's hard for you to share this, most likely, but I feel like you'd be remiss not to mention this to the new T because the T is a professional. If the T is not receptive to your concerns and doesn't give a satisfying or helpful response, then maybe that's not the right T. You know? Ts work for us, but a lot of people (including me) are hesistant to share their innermost fears and concerns with the T. But honestly, in my experience, I've made the most progress in therapy when I do share the deepest stuff with my therapist. Anyway, I hope you'll find the right path.