LV-TX: I had the issue you have after RRP and SRT, it occurred last May. I was dialated and so far so good but if it reoccurs there is a 100% chance of it happening again and again (google abstracts of urethral stricture disease.) Also your uro will probably have you self cath after the surgery, I refused to do that because of the downside risks of causing false passageways and trauma to the uretha.
Here is a Dr's website that explains things pretty good. I couldn't really find a lot of good info other than here. I haven't used this guy so I don't know his abilities but it was good info.
Good luck this week !!!!!