[DadsToy]

Yeah, mine does the same thing .... and it got worse after I put a short-shifter in it (probably because some of rubber damping material got moved allowing more noise into the cab). I think it's just the "nature of the beast". All gears make noise and in the Focus it seems to resonate at low RPM under load. If you've got more than 50K on your transmission oil, try changing it to see if it gets a little quieter... it won't go away though.