Need help with Silent Scope

[Excalibur007]

I finally got around to ripping Silent Scope last night (USA version). There was a 768 MB file called "SPECIAL.BIN" that was just a dummy, so I cut it to 515 MB and used it as the dummyfile placing it first on the disc with a sort. I kept the original sort order of the rest of the files, (SPECIAL.BIN is the 2nd file from the inside on a GDROM).

So on to my problem... I kept the lba of 45000, which I like to do whenever possible, and hacked the IP.BIN as usual. However, it gets past the S*ga screen, goes black like it's loading, then resets to the menu screen after a few seconds. There's obviously something I'm missing. Does anyone know what to do here?

Thanks,
-Ex