This same idea I thought about and it looks like a great idea. Now if I can find the right person to take it on.
So, not ever doing this update yet I take it that the double bearing side balance shaft gets removed completely and 2 hole bored bearings are installed and turned enough to BLOCK the oil holes. Then a cap is placed on the cover that is left over hole opening to seal it.
cap.jpg
Then the oil drive balance shaft with a single bearing would be machined like the above image and reinstalled. This side has a single bearing that does not have an oiler hole bored into it.
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