Yes, the hole is small - actually, it's a step-drilled hole - about 3mm at the inlet port and about 1mm at the discharge. But the hole is exposed to the oil supply twice per crankshaft rotation, multiplied by 6 rods.

I'm not as concerned about oil pressure as I am lack of cylinder wall lubrication.

And I'm not as concerned about cylinder wall lubrication as I am by the fact that folks who sell this stuff don't consider the consequences of changing operating parameters.... and seem content to accept whatever answer points them toward a sale..... which causes me to discount anything and everything they have to say. The crankcase is a fairly violent environment and there may be enough oil for the cylinder walls without the rod nozzles - so not drilling them might result in an overall advantage, but I would like to know that someone between the manufacturer/designer and user has considered the change and found the elimination of the nozzles acceptable.

I plan to take the rods to a machinist soon and see if he can drill the holes. It seems crazy to drill a new set of rods, but it also seems crazy not to do it without anecdotal evidence that they're unnecessary.

Frank