No need to be sorry its your opinion. My opinion is based on experience and this is a worthwhile procedure especially in a manual transmission application.
Please explain how the thrust faces gets pressurized oil. J.Rob
The only way the thrust gets pressurized oil is to drill that hole. Otherwise the thrust gets fed by the leak from the main bearing.
So what you are doing is the most simple, easy way to get pressurized oil to the thrust. I can’t see how that small hole would cause a block failure.
