RE: Inspect and clean
I think I might be using words previously written by someone else...
Oh, dear!
No ABC, AAC, ABN, or ABL engine should be honed with any abrasive, prior to, or during the break-in.
Such an engine must be tight around TDC.
Those that are loose are worn out from new; and those that are just a little tight, just don't last as long as the really tight ones.