US Car Tool Core Support Stiffener

I'm mocking up my core stiffener today and I'm finding it to be a poor fit. My core support has a very gentle radius on it but the US Car tool stiffener has a very sharp corner.

Should I?
1) persuade the core support to be shaped more like the stiffener
2) persuade the stiffener to be shaped more like the core support
3) Ignore it and let there be a gap in the corner
4) None of the above