Loss of pad depth with the 7th

[wildwildmike]

This is because the number of notes in the pool increases by 33 percent when you add the 7th, while the pad range value is just the integer number of notes to spread out so if you have C Maj - CEG, then a pad range of 9 you'll get 3 octaves of spread, but if you do C Maj 7th - CEGB, then then the spread is suddenly 2 octaves and a root instead of 3 octaves.
I hope that makes sense.
Jesse

It does. Thank you!