Lightening a stock 440 crank

I had a guy with a laithe turn down the counter weights on my 440 crank.120 thou. If u don’t turn the weights down u will be drilling big holes in the crank. My thoughts were if I didn’t get enough metal taken off the weights that I would knife edge them some. My Molnar rods and Diamond pistons are a lot lighter. I would check with the guy turning ur crank how much to chamfer the oil holes or even if he recommends it. Kim