i put 1/8th screws in my diffs and i even have the centre diff with nuts for extra sercurity the front and back dont have the clearance and i had to dremel a bit of room for the nuts and always thread lock,those new k factory outdrives,suspenion arms and dogbones will improve it abit as wel,i want to get the new model when it comes out(beta not tell the wife about that one)