If, as you say Chris, the ball reaction of the Power Machine is very close to the Toxic the he already has, then why drill the PM at all? I don't understand why you advised him to drill another ball the same as one that he already has. Two balls for the same reaction?
??
If the reaction is the same, the keep the PM NIB undrilled and use it as an eventual replacement for the Toxic.
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I've upped my average, so up yours!