Shim for increased Oil Pressure

[Hammerhead]

Or you may have a motor like mine that was just on the low side of the spec right out of the box...
Dimes are easy to come by, and make great shims as it's easy to adjust in nice small convenient increments.
That pic Brock posted, just slide the spring out of the cup end of the dogbone, coat up your desired number of dimes with petroleum jelly to hold in place, reinsert spring and reassemble...
I never measured the dime stack, I will later tonight when I get home just to provide complete info as people seem to want a measurement instead of quantity. I didn't think a measurement was that critical.