Hi Jimmy..why not just make a template of your thin area ? It sounds to me that with such a narrow strip requiring coverage, you`re going to really have to cut any system down drastically [I wouldn`t advise cutting any type of base other than lace] By the sounds of it you`re literally halving the original size which will lead to various issues... If I were you, I`d simply send in a template of the size you require and get a nice comfy fit/blend. Regards, Paul.