Thanks so much for this! I've just succeeded in adding the event to B3!

Although I added the event to iourt41. I would maybe rather have it in a separate file, but if its too crazy, I won't bother. The thing I had issues with in doing it was when I inherit the iourt41 parser class, how can I add a new re.compile() line to _lineFormats = ()? Can I do _lineFormats.append('new re.compile line here')?
Thanks again for your help Courgette!
Also, if I define variables that already exist in iourt41.py in my new parser, will they overwrite the original with my new, modified values?