increasing duration of lots of notes simultaneously?

HaAppy new year.
I've a small problem. I've been using the 2500 pads to put loads of bassline paterns into sequences, to run external synths with. The trouble is, all the times between [note on] and [note off] are too short (& stabby).
would someone mind telling me if there's a way of upping the D: 6 (D for duration??) on ALL the notes at the same time?
cos there's thousands of them, and i don't really want to have to go through them all one at a time.
Cheers.

Oh, JJOS 310 (i think)

mode/pad 13 = seq edit. scroll to duration and either select "add to" or "set to"

Top man, thankyou very much. i never saw that bit tucked away there. I thought it was just for moving tracks around.
It just solved another problem i've been pondering too - how to move a pattern from one pad to another, for drum variations, without having to shuffle samples in programs around. TRANSPOSE!
ideal. ta.