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Showing results for tags 'sac length'.
Well, I dissembled it, have the right sac, have talc, and have Vacumatic lubricant. How do I measure where to trim the sac so it doesn't bang into the breather tube? The pen is standard size. The Pen Repair Book 2nd Ed recommends no more than 30 mm. Is there a way to measure that is pen specific particularly if I change out the breather tube? Thanks