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I have a Home build that I got a while back. I had it out going thru it and noticed the front top plate hole on the RSP is cracked. I do not think it will affect the function but figured I would ask.
 

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The top right hole on the RSP is the upper trunnion rivet hole. this holds the trunnion in place and I would think it's pretty important. why not grind it out "V" pattern and weld it, then dress it down?
 

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PhD in Over-Engineering
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I am thinking that he refers to the long .200" rivet that goes through the front of the top plate, just behind the top feed cover. I've seen that on some 1928 side plates. It should be ground and welded like bigmike suggests. That's what I would do, as much to make sure it doesn't worsen as to be secure in the strength of the assembly. Cracks like to grow!
 
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