Hi Bruce,
just wondering...what goal did you follow? Perhaps, i don't understand it...why you cut the roof and back? Why did you cut the frontend? Please explain it to me. I think, i have tomatoes on my eyes or i overread something?!? Dont know...
Perhaps, i can help. had the same problem at my custom-Impala. Try to "paint" glue on the ghost trim lines, let the glue dry and sand it again. I hope, that will remove them.