i bought this box about three years ago from the gearbox man or bernie boxs i think. so by the look of what your saying it has not got the right gears in it or i have not calculated something write i dont know about these gear raitos so looking at what i ve got is it bad or good i paid 1000 pound for this cash with the atb diff in it as i blew 3 gearboxs in 6 months and up till know it has been great untill i run it on my 1800 high comp lump and then it blew second gear had the car on the rollers and it made 212bhp and 260flb at 10psi on a standard t3 and got a xr2 box in at the minit and its already makin noise so want to get a good box in asap