Recently got some 405’s. I measure 10.5D on brannock. Actually more like a 10.8D. In this boot I ordered a 10.5C as a few have reccomended. It feels about perfect, just a touch snug on my instep. I have not tried my usual shoe size - 10.5D but i have tried the whole size down thing and briefly owned a pair in 10D and they felt short and wide. Is it normal for instep to be a touch snug? Will that stretch a little? Or does it sound like i should try my usual shoe size?