Good news; no damage to engine internals, all bearings look good, no particles imbedded in bearings or found anywhere in the oiling system, Just in the sump and a few behind the cam thrust bearing? I can't remember if there was some small shim behind the cam gear, but everything was tight. The shavings I now believe are brass, not copper. It was not the distributor gear. Going to button it back up after a cam change, (less aggressive). In the future, will pull the pan every now and then for inspection.