According to the Stromberg instructions (a little confusing) the lock/star washers go on top of the jack flange, because the instructions have you placing the jack through the A-frame first, then they reference adding the bolts/star washers.
It sounds like the lock/star washers are in addition to insuring that metal to metal contact took place (jack flange and frame). I would scrape some of the paint off on the two surfaces.
But then again, probably wouldn't hurt if the lock/star-washers were between the two surfaces. ON EDIT: Depending on type of fastener.
Bob
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2016 GM 2500HD 6.0L/4.10
2018 Jay Flight 24RBS
2002 GM 2500HD 6.0L/4:10 (retired)
2005 Jayco Eagle 278FBS (retired)
1999 Jayco Eagle 246FB (retired)
Reese HP Dual Cam (Strait-Line)
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