Sorry, but I just can't leave this alone.
I didn't say to bore through the sleeve. In fact, I said personally, I wouldn't do it, it's unnecessary. If you want to get grease to the bearings, the best way (IMO) is to zerk through the swing-arm. The pivot bolt would be zerked to get grease to where the bolt and sleeves meet simply to prevent seizing. It's simple enough and looking at the parts diagram, easy enough to understand.
As far as following the path of least resistance, naturally the grease wants to exit through one particluar side. But when I apply a little pressure with my 6" prybar and nudge the s-arm to one side, I get the grease to come out the other side. NO BEARING IS LEFT UNFLUSHED/UNLUBED.
In the end, if anyone tries it and for some unknown reason decides they don't like it, they can simply ignore the zerks and go back to the sledge, torch, local shop, rapped knuckles and then come on line and tell me why they don't like it. Sure, if it's taken apart every couple of months the bolt may not seize, and the bearings may not wear prematurely. But why on earth would you want to take it apart if you don't have to,-the satisfaction of knowing it's clean and well lubricated? I get that every time I plug on my grease-gun.