Out of interest what main blades are you running?
Parameters I found which effect the pitchy elevator in fast forward flight are the "Cyclic Pitch Compensate" as expected, "Hiller Mix Rate" and "Swashplate Return Speed" sliders also play a large part in removing a lot of the pitch up. In fact my 450 PRO taught me a lot more about these sliders and their effect on this problem.
It has recently been seen that running a higher lock gain (reducing overall gain slightly to compensate) helps in stops after aggressive cyclic commands, this can also effect fast forward flight also.
Looking at the settings file I would say try lowering the Swashplate Return Speed slider 10% and increase the Hiller Mix Rate 10% also, then le me know.