Long tournament

I have one going at present where my opponent and I have played three "final rounds" and tied all of them at 3 points each. We have just started the fourth "final round". We were wondering what the longest final round is on RHP. I seem to remember that there was a thread on this a while back, but I can't find it - I think that one player had over 10 "final rounds" before things were settled.

I've had a couple of finals re-matches. Have to say it gets a bit tedious - like it or not, you get to know your opponent's repertoire quite quickly and he/she yours, and there's a growing feeling of deja vu. it makes for flat games.
A shame there's no mutual 'let's call it a tie' facility - but without a re-rack....