Mike, try reducing the spring factor entry, the stock levels look awful dont they ?
[NoseGear]
SystemType=LANDING_GEAR
Retractable=TRUE
DeployTime=5.0
AnimationID=2
DragArea=0.25
HideGearNode=TRUE
ModelNodeName=gear_strut_front
InsideNodeName=
ShockAnimationID=5
ShockStroke=0.40
SpringFactor=0.05---------------------------This Line.................
DampingFactor=1.5
WheelNodeName=wheels_front
RotationAxis=X-Axis
ReverseWheelRotation=TRUE
RollingRadius=0.26
CastoringWheel=TRUE
CastoringNodeName=gear_swivel
Steerable=TRUE
MaxSteeringSpeed=41.15
Locking=FALSE
MaxSteeringAngle=45.0
InputName=YAW_CONTROL
ControlRate=2.0
HasBrakes=FALSE
RollingCoefficient=0.05
MaxDeploySpeed=128.61
MaxLoadFactor=5.0