Wow, I didn't know a plug cutter would drill a hole . . I'd have to agree that the weighthole looks to be a 1 3/8ths, because it's noticeably larger than the hole drilled for the thumb slug, which looks to be 1 1/4th.
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New member of the Metal Militia!!! If you think Simple Plan is metal, then you must die. And not get to be a member . .\m/!!!