benji its funny u have the same prob as me, ford tested the box said nothing was wring with it, it seems to alwasys happen to me at low speeds, and cruising and after gear changing. I can replicate the problem when I pout it in sports mode , change gears as seen as possible , like 2 at 20kmh and 3 at 30 4th at 50 and 6 at 70 , when I change into 6ht it does it only in sixth. ford said they dont service the box until 150xxx and my car has only done 80000 bf m2