hey all, new to forum and am re-building a perkins 3.152. I am having difficulties properly orienting the piston rings top up. I have a set of Vapormatic # VPB4000 rings that clearly say they are to be oriented up but upon inspection I cannot see a clear profile or angled edge or any stamping on any of the rings that indicate the top. Can't proceed without some kind of comfort level with this.....any suggestions would be greatly appreciated
rebuilding a perkins 3.152
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