suspension tuning

I have been working hard on getting my FX 450 ready for our HS season opener and have noticed the suspension was very good everywhere but in the bigger whoops the bike or chassis has a trait of pivoting or porpoising front to rear which affects being able to ride in an agressive mannor. I have it sprung correctly for me and during testing have been getting closer and closer to my liking, the last test session in Croom which has whoops of all shapes and sizes gave me a great opportunity to work on the bikes only flaw and with some careful adjustments, especially rear rebound I have gotten it to be VERY good in the whoops with little to no pivot feel and still work well everywhere else. This bike is very sensitive to setup and when wrong it is a handful BUT when right it is magic. I feel that with more tuning I will be so pleased I will not be seeking a revalve as I have on my previous bikes.