Playing dual layer SACD/CD disc on Sony DVP9000 ES

My Sony DVP 9000ES (unmodified) ceased playing the SACD layer on "hybrid" SACD/CD discs early on. Unit does play Redbook CD and single layer SACD "only" discs without problem. Toggling the remote or going into player set-up menus does not correct the problem - player always defaults to CD layer on hybrid discs. Am wondering if this may be a firmware/software issue? Has anyone experienced similar problems? Am also considering replacing the 9000ES with Arcam FMJ CD-33 for CD playback purposes versus performing upgrade mods (e.g. Modwright) on the Sony - any opinions?
Having been there and done that I found out the DVP-S9000 ES was designed before hybrid disks were around (per Sony). It was never designed to read them. I dumped mine for $515 + shipping on eBay and was thrilled to do so.

My Sony DVP S9000ES is an existance proof that it is supposed to play hybrid disks, because until recently it played the SACD layer of "Let It Bleed" and a number of other disks. It still recognizes the disk as SACD before reverting to CD. I intend to fix and use my elegant S9000ES in my secondary system even after I buy a SCD-1.

Does anyone know if Sony has something as simple as a software update that could be fed to this beautiful, but mostly useless (mine, anyway) machine?
I came across my first hybrid for which my 9000ES would not read the SACD layer: Bela Fleck's "Drive". It happens to be a MoFi disc; I recall at least someone else (maybe multiple people) on a'gon mentioning that the 9000ES has problems with MoFi's.

I tried the recalibration steps mentioned above, did the memory clear also before recalibration. Always had to do SACD calibration by itself; the unit never selected it from the "All" routine. Also, the unit would reject SACDs frequently; had the least success with discs that had multi-channel material (and were not hybrids).

Another MoFi disc I have works fine, one of the Kinks hybrids. Don't know offhand if I have any other MoFi hybrids, but I'll look.

I have had intermittent problems with a few other hybrids, but the unit eventually was able to read/play the SACD layer. I noticed that all of these offending discs were not pristine - scratches and/or smudges (how'd that happen!). I cleaned most smudges off a particularly finicky one with smudges and scratches, and it improved the 9000's ability to read the SACD layer. Fleck disc appears pristine, though.

I think I read in another thread, maybe on audio asylum, about the possibility of getting an updated laser assembly or similar for the unit. The thread mentioned model numbers for the original and newer assemblies. I'll have to find it again.