Well, finally the moment is there! 80+. Really happy, and also a new PR on Vavg. And 3/100 under my Alpha record. If there would be a Halpha ranking I would have taken the day victory 
I took my 6.3 which until now has been sailed with SDM, today I rigged 4mtr RDM. The feeling is so different, much softer. The first test run immediately showed a 78, but afterward hit the glass ceiling with 76max, 74run. But that turned for the good 
Once we had a bit more wind, or me just being lucky with the gusts, the speeds went up. The 80 ended up in a crash, but who cares! The shot would definitely made the movie...
Thanks guys, was a great day out. JvH..bummer!