AIGROUND with UTL2

Hi guys.

I´m using AIGROUND + UTL in P3Dv4, but I can´t seem to extend the landing rolls. Here´s my AIGround.ini:

AIPUSHBACKHOLDTIME=60
AIEXTENDEDPUSHBACK=1
//AINOCONTROLCHECK=0
AITAXISEPARATIONDISTANCE=200.0
//AIADVANCEDINCURSIONDETECTION=0
//AITAXILOCALDISTANCE=5.0
//AIMONITORRADIUS=55556
LANDINGBRAKINGSCALAR=50
LANDINGTARGETTIME=40.0
AILANDINGBRAKINGGAIN=3.0
//AITAKEOFFTHRUSTDERATESCALAR=1.0
//AITAKEOFFTARGETTIME=0
//AITAKEOFFTHRUSTDERATEGAIN=3.0
//AIPLANESPOTTINGONLY=0
//INSIMMESSAGELEVEL=2
//STARTMINIMIZED=1
INIPERIODICUPDATE=1

Has anyone been able to find good numbers for UTL ?

Thanks

Eduardo