Not sure if you figured this out...
2001 RCs weren't made with spool threads. Period. I know the fiche says otherwise, but they just aren't there. I've seen 2 or 3 2001s, all without it,a ndc confirmed with the dealer.
God knows why, cause it sucks.
You need to drill the rear dropout tang about 1" from the weld line. This is where HRC actually recommends, and where mine were done, with no problems.