Our next major step is to bolt the second 'case layer onto Lefty. Inchworm supplies a full set of bolts in case you need them, but there were enough factory Toyota bolts on hand to do the job, so that's what was used. The bolt on the lower right of the roller bearing goes through Lefty to the front 'case and further secures the roller bearing in the bore. Clever. Jay dabbed some grease onto the roller bearing prior to assembly. Gear oil and grease were applied to just about every surface during the assembly process to ensure smooth operation upon initial start-up. Assembly lube works too.