From Giorgio
I think this solves the problem.

At least in my setup, the Spit doesn't bounce anymore and also sinking wheels are sorted out.
Let me know if it works also for you.
[WEIGHT_AND_BALANCE]
//empty_weight_CG_position = 0.13, 0.000, 0.000 // (feet) longitudinal, lateral, vertical distance from
//specified
empty_weight_CG_position = 0.09, 0.000, 0.000 // (feet) longitudinal, lateral, vertical distance from specified
datum
[contact_points]
point.0= 1, -21.570, 0.000, -0.36, 1500, 0, 0.400, 90.000, 0.300, 2.500, 0.750, 2.000, 2.000, 0
point.1= 1, 1.480, -2.61, -5.13, 1500, 1, 0.95, 0.000, 0.340, 2.500, 0.750, 3.000, 6.000, 2
point.2= 1, 1.480, 2.61, -5.13, 1500, 2, 0.95, 0.000, 0.340, 2.500, 0.750, 4.000, 3.000, 3
//point.0= 1, -21.570, 0.000, -.2, 1500, 0, 0.400, 90.000, 0.100, 2.500, 0.750, 2.000, 2.000, 0
//point.1= 1, 1.480, -2.61, -5.10, 1500, 1, 0.95, 0.000, 0.300, 2.500, 0.750, 3.000, 6.000, 2
//point.2= 1, 1.480, 2.61, -5.10, 1500, 2, 0.95, 0.000, 0.300, 2.500, 0.750, 4.000, 3.000, 3
@Steve:
Changing cruise speed solves the problem with flaps, but now it flies a little bit dived....
Giorgio