i had no problems with those kind of patches; I patched a few NTSC games to work with PAL, seems to be a lot better with ePSXe.
....it can also help to fix wrong coloured MDEC's
Oh, btw, I have a jap. r-type delta, the NTSC/J>PAL patch (allthough actually not needed afterall) provides a cheat for unlimited 'power blasts'.....chaos!!!!
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