I too have had bile duct issues due to a blocked hepatic artery. I had my transplant in June of 2016. All numbers are good and feel good until blockage. I can tell when it happens as my bilirubin spikes and I start the itching. Over the three years I have had a total of about 10 ERCP's. My last was February of this year. I am currently scheduled for my next one in middle of May. I went a period of about 10 months with no stint. I was told in February that if it is not successful this time, my doctor would talk to rest of team and consider opening me back up to do what he called creative plumbing. From what I have gathered, he said it would involve attaching my bile duct to my intestines. I have had as many as seven stents at one time. I have even had the metal stint once or twice. I currently have 2 stints right now. I keep my fingers crossed and have trust in my team. More so have trust in God that he has a bigger plan for me or I wouldn't have received a liver so quick.i hope all goes well with yours and for now I look at the ERCP as a little routine maintenance.