I had RARP April 2014.
Following on from op flow rate went down to 1.5 ml/sec.
Had dilatation / stretch August 2014, flow rate 20ml/sec then flow rate slowed again.
Had second dilatation November 2014, flow rate back up to 20 ml/ sec.
Since November dilatation / stretch I carry out intermittent self catheterisation (ISC) every other day to keep the neck open.
Three months on flow rate has never been below 10ml/sec sometimes 20ml/sec but mostly around 15ml,sec.
If flow rate starts to slow again incision may be the next option.
I was dry 14 days post RARP, and my continence has not been affected by my procedures but please bear in mind my procedures were stretches NOT incision, has this been discussed as an option for you.
I was told two stretches then possibly incision.