Hey you didnt say the year when you say it whines the noise is from gear engagement lash (gap) you probaly have 10-50 or 20-50 oil in it to get it quiet put GL70-GL90 (gear lube 90 is easer to find and works great they harley used to use it in older bikes now they try to use the same oil 20-50 in everything engine, trans ,primary, hope this helps
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