I get what your saying. My issue is I never failed the 5-6 rod bearings, and I’ve never seen anyone else. It’s always the 3-4 rods. In fact, my first 2 X block came real cheap because he kicked the 3-4 rods off both and quit racing over it. I offered to have him send them to me, and I’d fix the issues but he was done. His loss, my gain. A couple of sleeves and they went into service.
So that can’t be a velocity issue. If you’ve ever seen say...a long string of sprinklers in a field, like 30 or so where you get look at the system filling up, you’ll see the last 2 or 3 sprinkler heads and the first 20 or so will all be at full load while those at the far end that are 3-5 are the very last to get to full flow. Once they are all flowing, the nozzle is the limit. Pretty much what happens in an oiling system.