I kinda figured on the blisters .

I don't know though if I'd do any milling on this or not. I do believe it's made fairly well. I'd try the sharp blade first. The drill helps supposidly though I've never needed to try it. Hate to ruin the deal. You might also find a way to put a stop in or mark the taper tool once you get the blade right. Makes life a hole lot easier!