[Ed Wright]

Bill, that is about all I noticed.

As far as running less lube, I would not recommend that. I use Royal Purple 80wt in mine.
It holds almost two bottles. I was running one thinking about drag, or "windage". At Indy in 2011 James Lee rode up there with me. We were parked across from long time hero of mine Jimmy Bridges. He told James about testing he did on the bench with a rear end he rigged up with a clear back cover so he could watch the line at speed. I don't remember the speed he told James, but most of the lube goes out into the axle tubes. Low lube levels cause the gear set to run out of lube sooner, or at a lower speed.
After hearing that I dumped the other bottle of lube in my rear end. Ran my first MPH over 132. Wasn't sure if I could believe it until my MPH stayed about half a MPH for the rest of the year. My gear life is better to boot. With the lube going to the axle tubes, drag on the gears running in the lube becomes moot. If that info came from somebody other than Jimmy, I might have not been so quick to believe it. Jimmy tests about everything.
Hope this helps somebody else.