I took my SN93 apart for the first time and I have seen pictures of the in side of other units and on the oil pump I have seen a spring that holds the oil pump from turning and hitting the pump housing. I did not have a spring there is two small holes that one could be installed. Should I get one and put it on or is it not required to have one. Where it been hitting the pump housing it has made a dent.
Thanks
DWF
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