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Old 09-04-2018, 06:35 PM   #3
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Join Date: May 2010
Location: Powell, TN
Posts: 1,987
Default Re: Winfield SU 1R N

I have been rummaging thru the net and from what I have found, the R stands for retarded time. There was a A an d R cam. Hopefully ,someone will chime in here with some actual info.
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