I think that it's not automatic that one would get maternal transference with an older T anyway. Sometimes transference happens because of looks, tone of voice, unconscious intention...your current T sounds otherwise a good fit, so maybe try it for, say, six months or so? I agree with others on here, age is not necessarily an indicator of competence. Yes, an older T will have probably had more clients, but younger Ts may have had a more thorough training, as regulations tend to get tighter on training requirements....good luck x