Rega DAC problems

This is from the Rega DAC manual:

The optical system used for optical inputs 1&2 is nearing its
maximum at 192K. If you experience difficulties try the
following: Use a higher quality or shorter lead. When using
3.5mm jack outputs commonly found on computers and sound
cards etc. Try and use a mini Toslink optical 3.5mm
jack connector lead and avoid using a 3.5mm to full size
adaptor with a standard full size Toslink lead.

"When all else fails, consult the manual" -words of wisdom.

I'm using a glass fiber Toslink and should fall under the "higher quality" category. OTOH, it is three meters long.

I'll wait for a rainy day (long wait in 'Vegas) and experiment with shorter Toslink cable, RCA, etc.

I'd sure feel cheated if I can't get this to work.

Thanks for your responses.

Did you try a coax connection for troubleshooting purposes?

No, not yet. The Oppo is too far away from the Rega for my vintage 1-meter Audioquest digital cable.
I may have some time over Thanksgiving to play with it.
You would think that if the Toslink can't support 24/192 that it (the Rega) would downshift to 24/96 or 16/96?

Well, I tried moving the Oppo closer to the Rega and hooked up with an RCA connector.
I think I'm hearing better sound with the Yes BluRay (original stereo mixes @ 24/192, 2013 mixes @ 24/96)
but the Rega LED always shows 16/44.
I've checked all Oppo audio settings and don't think this is the problem.
This is so frustrating.

The higher sampling rates sound smoother and require a volume boost (usually play @ volume "60" BluRay required "75" for equal loudness.

Mr. MoFi: I can't find the passage about Toslink in my manual.
Does Rega think they've worked this out by now?
FYI: I purchased my DAC in the last 6 months.

If anyone has a Rega that shows a 96 or 192 data lock,
please drop me a note. -Thanks