b44.2 nose diving badly

[zoaman]

I have been running a 44.1 but upgraded this week to a 44.2. all is well except the car is nose diving badly. when bought this car had no spine weights so as my 44.1 I added 85 on the rear spine between batteries. still no luck so I added some brass under the batteries. still no luck. gave the car to another 2 respected drivers and the same. total control and planted but nose dives. might I say not a large jump.
taken slow =dive
fast with a blip in air =same
all micros when untouched by the jump and other style cars where all ok.
the jump was shaped like a quarter pipe.
was it just down to the jump or some thing else im missing.