Yep, you are doing the trial and error approach. That is what we all have to do to "find" that perfect fit for us. It seems that we can give you the method and hints, but everyone is just so different. A little tweek here and there and wah-lah, you have an appliance that you can gain confidance with! So good to hear your experiences....
Diagnosed with CD in 1979, many resections and meds
Perm Ileostomy July 1984 at Cleveland Clinic
Disease free since surgery