Do the Chimera's only have 1 set of spider gears in the diff? When replacing mystery grease with some 7k and 5k fluid each diff only had 2 spider gears, not 4. Also looking at the manual it looks like there should of been some washers underneath the cup gear over the o-rings. I had the o-rings but not the washers. Has anyone else experienced this or is this the way it is?