having problems with selecting gears on my triptronic auto box, how can u set thsee boxes up to handle 300BHP and more as think its the power im running , at the moment 285BHP, the box is also not selecting 2nd gear in triptronic mode i.e on the wheel but selecting evry other 3rd,4th and drive are fine , any ideas what this could be, i did phone toyota but they said that they wont touch it ? and i need to go to a specialist