hi again,,, 2003 clk 320, auto, had an issue with auto box not changing gear smoothly and at the right times,,, just reached 91000 miles,,, so oil and filter changed in both engine and auto box,,, gearbox was smelling of slightly burnt odour and bit dirty, geniune mercedes oils and filters fitted, gearbox reset in the obd socket,, drives a bit better and changes are smoother and at right times,, however throttle response has always been a bit odd, sometimes nice and smooth, sometimes very vague and like the cable has stretched,, some times only get limited throttle,, and have to stop, switch off and restart,, any ideas please,, thankyou in advance