TT...any chance you could make a rebuild video? I'd never have thought of the foot powder thing...
Video seems unlikely due to the absence of an actual video camera.
Is there such a thing as an over the shoulder cam?
Anyway, it might not be the oil pump itself that is leaking, but rather the oil pressure switch located on top. I notice it is wet with oil, too.
Anyway, you can run the engine and see if it is leaking. If it's slow, then the powder thing will show where it's creeping out.
By the way, K2R in a spray can will also work. But, it can be hard on paint/plastic. Another alternative is Whiting compound. It's a powder you mix with alcohol (or other solvent safe for the surface it is being applied upon) and smear on whatever you want to suck the oil out of. The alcohol evaporates and the white powder clings and changes color as it draws out the oil. (Used on wood gun stocks that have been oil soaked.)
Spray foot powder is easier to find and the talc shows the same color change wherever oil is absorbed. (I think Bob Wessner was the first to suggest this product choice, actually.)
Cheers,