Check www.necstasy.net for verified table of contents and burning instructions. I've never made a back-up of a PC-FX image, but I'm guessing that the process would be similar to a Turbo CD. At the very least, your table of contents should match those at necstasy.
Adding PCE console specific layer on top of that, makes for an interesting challenge (no, not a reference to Ys II).
Speaking of this thread, I haven't seen ruina on #utopiasoft in awhile. I hope he's still up to doing PC-FX homebrew.
Glad to hear that you got it working - now go play some Zeroigar!