Shawn, how high is the back collar height of your collar? I once ordered a BD collar with a very nice roll, but the collar height seemed a bit too big for me. I was smacking my chin against the collar too when worn without a tie haha
From research, I understand my stereotypical size (extrapolating from Rain) would be from 8.5UK Rain to 42.5 F last (correct?). Do any of you with a slightly high to high instep go another half size up (so in my case, to 43)?