I'd say Stephen before you run this in the custom series, you dont modify the physics....
Son Uva Digger Settings
engine
;min rpm, max rpm, torque, differential ratio, rear gear, first, second, third, fourth, fifth, sixth
950.0, 2600.0, 13000.0, 4.10, 5.00, 10.00, 3.06, 2.13, 2.13, -1.0
Tire Settings grip level
set_node_defaults -1, 1.3, -1, -1
set_node_defaults -1, 2.1, -1, -1
Rockstar Energy CRD
engine
;min rpm, max rpm, torque, differential ratio, rear gear, first, second, third, fourth, fifth, sixth
950.0, 2600.0, 14500.0, 4.10, 5.00, 10.00, 3.06, 1.93, 1.35, -1.0
Tire settings grip level
set_node_defaults -1, 1.3, -1, -1
set_node_defaults -1, 2.5, -1, -1
I double checked son uva digger to see if I had messed up on the pack, and I hadn't..Custom series doesnt mean you get custom physics Stephen.