[deano261]

i had a problem with it chewing through idler gears so get a kevlar one and then upgrade your spur gear to a Team Associated B4 one with the slipper pads this will also take some of the heat of the gearbox. Secondly apply some diff lube in the gearbox just to make sure it runs a little free-er (you don't have to do this but i did and it helped). Thirdly make sure that you have a smooth diff, if not upgrade the bearings inside it and put diff lube in it.

After this your gearbox will be lovely and smooth and shouldnt be as bad.

just remember to set the slipper up right though after fitting it all together.

and if like me you destroy many of the mounting plates (the green plate) upgrade it to an aluminium with the grooves (that also helps dissipate some heat)

Hope this all helps.

I also learnt the hard way (and the expensive way)