I think the qrec affects the end of recording as well. So you could set length to max and manually stop the recording quantized to the value of your choice to get a recording of 128 steps if that makes sense.
nice one - this seems to work, although i’m getting a click, which is annoying, as it’s a pad sound
i have done a ton of live looping of the SRC/MAIN with a RLEN set to 64 steps, but this time it’s AB that I am recording