I had used my 1653S with CSTJ and it worked, but I recognized that it wouldn't read burned MCC DVDs at 12x as good as CS09 does (same problem with CS0C).
I also recognized that to be able to get relative good MCC burning results I had to RESET the eprom.
This is what you should try if you didn't do it yet. Also when you flash back to CS09 you should definetly RESET the eprom, since I experienced bad burn results without doing so!
I reported the MCC problem of CS0C and CSTJ to Lite-On. Unfortunately they didn't feel too responsible for problem of an unofficial firmware. But maybe they took care of it in CS0K anyway... hopefully!