I’ve never done that mod and I’ve never had issues like you listed. I do love to tube my lifter gallery’s on my small blocks but my sons 360 is running 6.50’s with the only mod being a set screw blocked the lifter valley on the driver side, brad penn 10-40 and a high volume oil pump. Ohh and a Milidon oil pan. My Canton pan was losing oil pressure during my passes.
