To ALL of YOU who have responded ... you have given me insight and clear indication of the case that this is a manufacturing defect "artifact" of some unknown machining operation ... it is far to "straight" to be a random event. Especially for a NEW engine. I only planned some BREAK-IN runs ... now to be postponed until repairs are completed.
The good news is that I have one-each of this models CLONES; Magnum XLS 46A & ASP S46AII. Both are nearly twins to the OSM 46 FX engine. I will utilze them for now and put this one on the shelf until further need arises. Thanks for ALL of your reviews and insights. Here they are with diesel head installations. - Flypast111