Hi, I'm just wondering how long it took people to get a decent long lasting fit? My 18a is getting better, no major problems now but still minor problems as the skin starts to bubble out of the gaps over time and get a little sore. I'm slowly opening up the inside with a metal work tool bit by bit as my feeling is I'm only a few millimetres away from a long term fit. Right now I'm good for about 5 days before I get swelling and have to move the skin around every day and dip myself in warm salty water to calm things down. Not terrible but a bit uncomfortable.