Anyone ever tried to improve the lubrication to the primary drive side crank bearing?

I've got 4 shot cranks here (3 NSR and one RS), every one has that same bearing gone and all my NSR cases show signs of that bearing having tried to spin. I think it's got to be a weak point as the other 2 are lubricated via little pools with holes down to the crank in the top cylinder transfer ports.
The same system is used on the primary drive side one but rather than it being a pool the holds oil that then drips down to the bearing it's a slightly uphill path (or at best flat) with no effective pool at all (as ithe "pool" is past vertical) so the only chance it gets to pull any oil though is going to be when (if?) air and hopefully some oil get pulled through the "wrong way".

I was thinking I could probably make some effort to re-engineer the pool to make it able to hold something and make the lubrication path slightly downhill?
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