Can’t decide on filing for direct service-connection or secondary connection for flat feet

Hey all,

I have been diagnosed with pes planus and plantar fasciitis. I wonder what would be best on filing for compensation on the above two conditions given:

– my entrance exam lists normal arches for both feet

– never once complained about foot problems during military service 

– currently service-connected for bilateral knees

It seems a secondary connection will be the easier path going forward. Any help will be greatly appreciated.