[Chalkie]

Right I found my own solution to this now, nice and simple with no dremel work needed, no binding or chance of crushing the bearings plus you gain the ability to adjust the track width if needed.
You need a set of Kyosho UM569 ultima front axles plus a pair of 5x7x1mm washers (I used Dex410 front crunch spacers) simply replace the kit axles with the kyosho ones and use the included spacers plus the 5x7x1 spacers to adjust the track width.