The one thing I didn't like about the VZ61 was the small charging knobs. They are small, slippery and required a firm two finger squeeze to grip. VZ58usa.com is selling extended charging knobs. Installation of the new knobs is simple but some fitting was required. A Dremel with sanding disk was all that I needed. The new knobs work great. Two finger hook to both or just one side gets positive charging.
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