Originally Posted by arydstedt

Im having an issue rebuilding my rear diff. When I put the inner gears together (with all parts) it runs smoothly. As soon as I put pressure, tighten four black screws, it seizes. The gears all look good, no wear. Parts seem to fit in correctly. Its as if there is some imaginary, missing shim or washer. Or as if in some crazy way, the screws are messing with the gears. Has anyone experienced this? Initially a bearing failed, so I had to rebuild. The wheels were turning though. Called Losi, they told me nothing I hadnt tried. It has the newer style planetary and sun gears (updates). Race on sunday.....