hey 46u im almost done my rebulid to the 18ss and its going great i found the problem and it wasn't the diff's at all the reason the rear wasn't getting any power was you know the screw shaft 86094 to hold the drive cups on the spur shaft where the brake sits on it came loose and thats the reason what a pain in the but so i have to go get some shafts tomorrow and some new shock oil im going to try 25 this time. Oh and one more thing are you over 20 like nitronut and myself because i know we have some young one in this form