Hi Jim
In 2012 I developed a stricture 7 years after surgery.
over the next 6 years I had +10 dilations under a general anaesthetic but after some initial relief the stricture would narrow down.
for the past year I have been self dilating at home once a week and it has had the best results by far with good pouch evacuation!
hopefully your dilation is a success but rest assured there are other options should it not be.
good luck and all the best