For future reference - if you've working with a PAL source, you can usually convert to 23.976 fps easily enough with a variety of tools (I use Virtualdub myself, but have used AviSynth on occasion following the Captain's advice and/or guides). Your audio (if you've extracted it to wav) can be similarly manipulated with something like Audacity, and you can do this with or without the pitch shift as necessary.
In the case of an SD PAL edit, you could even change your BD to 25fps, sub the source file into your project, then export and convert back to 23.976 fps if you wanted to. Better to rebuild from scratch with the correct source, of course, but for a big complicated edit I'd at least consider it and see what the end result looks like if it was going to save me a lot of work....