this is the company
https://www.oaitesting.com/in their book I have for gasoline engine 5-30 for copper is normal. up to 100ppm is abnormal and 300ppmis excessive. 1 or 2 ppm can be from copper as an additive in some motor oils.
I've used both companies yrs ago surprise that before they didn't list common avg for GL1500 engine or at least that is what they said. pulled out some of my reports they listed copper avg the same.
fuel dilution causes higher copper wear.
in their manual transmission chart copper can be from clutch faces. which is most likely is your issue, since on bobistheoilguy.com most GL1500 engines will show copper at 11ppm, even my reports had same.
oil your using is a 20w50, too thick for your conditions causing higher wear? I've read this yrs ago that a 20w50 is too thick for many engine bearing and journals unless needed for racing, towing in mountains, high ambient temps, towing, desert, etc.
report shows your oil is low for phosphorus and zinc, esp., phosphorus which has been stated over the yrs keep bearings/journals happy.
GL1500 engines were designed in the '80s for a certain higher levels of phosphorus and zinc which were closer to 1500ppm. Honda saw the coming EPA changes to motor oils and used upgraded bearings and journals for the valkyrie and '97 to '00 Goldwing engines, however the oils have gotten even worst from oil specs in '97.
suggest you read my '17 post
https://www.valkyrieforum.com/bbs/index.php/topic,96825.0.htmlthe one link address has changed to
https://pqia.org/heavy-duty-diesel-engine-oil/ if u click on an oil can see every that is in it including zinc and phosphorus levels
why only certain diesel oils should be used
https://www.valkyrieforum.com/bbs/index.php/topic,65911.0.htmlFord specification WSS-M2C171-F1 requires higher levels of phosphorus and zinc. not all diesel oils are meeting this spec. all rotella's do.
https://www.fcsdchemicalsandlubricants.com/additionalinfo/Ford%20Motor%20Company%20CK-4%20FA-4%20Position%20Statement.pdfso my opinion use a diesel oil. IMHO the 20w50 is your problem. even though the report doesn't show a fuel dilution, I would still look into it, such as colder temps whereas the engine oil never gets to operating temp 220F for a long enough time, idle mixture screws are set to rich, etc. Also consider your clutch technique or were u just playing hard with the bike doing high rpm shifting than normal for this oil test?
Hope all of that helps and puts u in a good direction.