Hey james0933, in the first year of my injury I also used an abdominal binder and had the same issue as you. I didn't want the marks turning into sores so I slowly stopped using it. I haven't used a binder in 6 years now and it hasn't been a problem for me. Your core will probably feel very weak and floppy and your blood pressure will feel low initially but it'll get better. Just train yourself slowly without it and your body will improve.