autotest: tweak the Rascal tuning

Tools/autotest/ArduPlane.parm

@@ -3,6 +3,10 @@ SWITCH_ENABLE   0
 MAG_ENABLE	1
 TRIM_ARSPD_CM   2200
 TRIM_PITCH_CD   0
+TRIM_THROTTLE   70
+LIM_PITCH_MIN   -3000
+LIM_PITCH_MAX   -3500
+LIM_ROLL_CD     7000
 ARSPD_ENABLE    1
 ARSP2PTCH_I     0.1
 ARSPD_FBW_MAX   30
@@ -12,8 +16,8 @@ KFF_PTCHCOMP    0.3
 THR_MAX		100
 HDNG2RLL_D      0.5
 HDNG2RLL_I      0.01
-HDNG2RLL_IMAX   50.0
+HDNG2RLL_IMAX   100.0
-HDNG2RLL_P      1.50
+HDNG2RLL_P      1.0
 RC2_REV		-1
 RC4_REV		-1
 RC1_MAX         2000