i have a torpeda 1/8... i was doin a tear down of all three diffs and a clean up today getting ready for the torpedas come back when i get my new motor.... i did the front and the rear hade no problems now i got the center apart cleaned all the diff fluid out put the gears back in filled it with new diff fliud everthing is back in its groves... now when i put it togather and put the 4 screews back in its locked up you cant spin the the two ends where the front an rear drive shafts go.. i took it back apart and tried it all over agen and it still locks up once i put the screws in.. is there a big washer or something that gos in the middle of the caseing that stops the gears from binding up that himoto forgot to put in because when i opened up the center caseing there was nothing in it is was like dry..

FYI i also looked at all the gears there all in good order there not all grinded or chewed up..