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Old 01-01-2018, 06:05 PM
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spdbrake spdbrake is offline
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Join Date: Dec 2015
Location: DFW, TX
Cobra Make, Engine: BDR #53, 408W
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If you hold the old and new screws one in each hand. Heads towards your palms. Then hold the screw shanks against each other so they mesh. Then hold them up to the light to see the engagement. If they're the same pitch you should have uniform daylight across the meshed area.
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