360 Con rod bearing quick question

amazon69 said
Install the bearings as they are, never take a file/grinder to any bearing IMO!

I am very reluctant to take a file to the bearings. Doesn't seem sensible, plus I'm bound to **** it up. It would seem like a better option to find bearings with the slot, as more oiling has to be better. Doesn't seem to be quite so easy though, as the correct part number seems to be hit and miss as to whether the slots are there or not. Thanks for the help, much appreciated :)

The notch is the bearing as mentioned is for slinging oil up the cylinder walls under the pistons, which also tends to cool the piston a bit as the oil carries that heat away, but oil comes out around the sides of bearings naturally, so the oil gets slung around up in there anyway.
This is why it doesn't matter much if the opening is there or not.
Myself, if I thought it was that important I wouldn't have a problem notching them with the corner of a file, or even my Mototool.
The only really critical part would be to clean the edges of the notch so there were no burrs around it that might hold the edge of the bearing from seating against the rod and cap.
That area of a bearing never touches the crank journal anyway as they are slightly tapered at the ends to insure that.

Image D shows this tapered edge that never touches the journal.
You can even see it on your old bearings.