With Version 2.00 and Hijack v325 full stalk functionality has returned. Thank you Mark!!! ... now I can again "Mark" songs for attention with a single stalk button. In case anyone is interested, here are my current mappings:

[hijack]
disable_bassboost_FM=1
time_offset=-240
[ir_translate]
initial.C=null.L,null.L,null.L,null.L,null.L,null.L,20DF0B ;Power ON in Car
initial.H=null.L,null.L,null.L,null.L,null.L,null.L,null.L,null.L,null.L,null.L,null.L,null.L,000000.L,ffffff ; Power OFF at Home
; === PLAYER ===
KPrev.M=NextTrack.N,Right.U
KNext.M=PrevTrack.N,Left.U
KOff.LM=Detail
KOff.M=Info.N,Cancel.U
KSource.M=Tuner ; Toggle to Tuner
KBottom.M=Shuffle
KBottom.LM=Detail
; === TUNER ===
KPrev.LT=NextTrack.L,null
KPrev.T=KSPrev.N,Right.U
KSPrev.T=NextTrack
KNext.LT=PrevTrack.L,null
KNext.T=KSNext.N,Left.U
KSNext.T=PrevTrack
KOff.T=Info.N,Cancel.U
KRear.T=NextTrack.L,null ;Quick Seek Forward
KBottom.LT=Tuner ;Switch between AM/FM
KBottom.T=Tuner.L,null ;Change Bank
;
; Volume control is slow in Tuner mode. This fixes it.
KVolDown.T=Vol+
KVolUp.T=Vol-
VolAdjLow=0x1800,100,0x1000,25,60 ;default value shown
VolAdjMed=0x2000,409,0x1000,27,70 ;default value shown
VolAdjHigh=0x2000,3000,0xc00,30,80 ;default value_shown