sorry! looks like false alarm on the aluminium bits.
I forgot to mention I also had to replace the oil filter drain plug because I chewed it up last time because I didnt push the hex all the way in and because its a helfrauds hex so the fit was a bit loose.
So this time I chewed it up some more getting it out, and that was all taking place above the oil pan. I test fitted a couple of the bits back into the gouges of the plug under a magnifying glass and they seem to fit.
I'm turning into a complete engine hypochondriac
