I think you have to try changing the contact points in the .cfg...I found somewhere this...have a look if works.
Back up the aircraft.cfg before trying!
;/FLOATS
point.3=4, 5.1, -1.8, -2.7, 2500, 0, 0.0, 0, 0.50, 2.5, 0.70, 0.0, 0.0, 5, 0, 0
point.4=4, 5.1, 1.8, -2.7, 2500, 0, 0.0, 0, 0.50, 2.5, 0.70, 0.0, 0.0, 5, 0, 0
point.5=4, -15.3, -1.8, -1.6, 2500, 0, 0.0, 0, 0.50, 2.5, 0.70, 0.0, 0.0, 5, 0, 0
point.6=4, -15.3, 1.8, -1.6, 2500, 0, 0.0, 0, 0.50, 2.5, 0.70, 0.0, 0.0, 5, 0, 0;
/Wing Floats
point.7=4, -2.1,-20.5, -1.0, 1500, 0, 0.0, 0, 0.50, 2.5, 0.70, 12.0, 12.0, 5, 0, 0
point.8=4, -2.1, 20.5, -1.0, 1500, 0, 0.0, 0, 0.50, 2.5, 0.70, 14.0, 14.0, 5, 0, 0
point.9=5, -6.5, 0.0, -6.0, 0, 0, 0.0, 20, 0.00, 0.0, 1.00, 0.0, 0.0, 0, 0, 0
I will try the same tonight...as I applied the new dynamics and got the SPLASH as well