The other night (before the holidays), I tried ALS offset tuning with IR POX/POY signals and it worked pretty good.
I didn't need to tune the offset after the scanning script stopped.
Once we are at the foot hill of the main resonance, I ran something like
ezcaservo -r C1:LSC-POX11_I_MON C1:LSC-ALSX_OFFSET -g -0.003 &
ezcaservo -r C1:LSC-POY11_I_MON C1:LSC-ALSY_OFFSET -g -0.003 &
(... I am writing this with my memory. I could be wrong but conceptually the commands looked like these)