Just to answer some of the questions:
Sorry, jillybean, I also forgot the other hands, just remember that my LHO had 6
♥s, just missing the A. The play did not take much time
Justin, I agree with you that WE had no "rights" since we did not write down our agreement and could just clame anything. True was that I really FORGOT the system, so the explanation was right, my bid was wrong. Imo, if we COULD have been justifying that I erred -> no adjustment. But if the FIGB says that "psyches" are not allowed (though I think it was not a psyche because I did not willingly bid against the agreements to mislead opps), the score does not stand, ok.
I overcalled, Mauro alerted and explained according to the agreement we had. 3
♠ was lucky because I did not come into trouble, the
♠s were KNOWN.
I live in Germany and are in Italy for some holidays

.
We built up a system in a few minutes to play a weekly tourney in the bridge club of Bologna (nice place btw, also very good food!).
I hate argueing, especially when I am a guest in a foreign country; I will accept any decision made by TD. We do not need having a good result by some fishy action. And it was not a worldchampionship
To be honest: I found that the lady who opened had NO idea what was going on, just saw the bad result and... I found the 60/40 solution kind for our side, perhaps an adjustment to 6
♥= would have been the same in the end, the slam was not so hard to reach. That was a point why I posted: the decision seemed to me "salomonic", like being a little bit pregnant...
Caren
Those are my principles. If you don't like them I have others. (Groucho Marx)