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Think of this when cranking a wrench - finger pressure, wrist pressure, forearm pressure, shoulder pressure. Each engages ever increasing the strength of stronger muscles. You should be able to pull the frame off of the windscreen with finger pressure. If you are pulling off the frame with anything more than finger pressure - it would probably be from pulling in the wrong direction/force.
Last edited by BFeller; 09-06-2015 at 06:17 AM.
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