Futura 122 Spinnout
 

Hi all
Since one yeare i have a Futura 122 built 2008. My problem is that the Board hase the tendece to spinnout.
I Use 2 different Finns Slalom SR6b 42cm for Sail 6.5 and 5.5 and a Slalom Pro with 46cm for sail 9.0. Also it s verry hard to run upwind cours with this setup.
?????
The standars fin Freeride 40 was a mission imposible with the 6.5 sail!

Is this a fin problem, what should i change?
brg