I had a similar problem packing ctlin outlets for further routing.

The control value bangs after the control number. The control number is used to route the control value to its place, so whoever got the control value, it was always one bang delayed. This was specially irritating because my controls would never go to zero (I made a simple drawbar organ).

I worked around this problem by inserting an extra value to the left of the pack, thus creating a dummy hot inlet. I fed the dummy hot inlet with the last banging signal (the control value), and then removed it with an unpack. Then I packed it again, this time with no dummy value.