Greetings,
Mr. R. From memory (and that's none too good), Mr. F's diagram is appropriate. You asked about the wear plates. Allow me to expand on Mr. F's response.
The "inside" or BACK wear plate is indeed #5 and again from memory is very thin (.015" perhaps?) stainless steel, I think. The "outside" wear plate (and also the outer cover) is #1. Both can be reversed.
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RTF
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