I have been training for almost a year now, injury free. I got sized and tested for shoes about 4 months ago, which I love. I am a severe over-pronator.. especially on my right foot because that ankle was torn up and doesnt have the flexibility. Where it hits on the outside and slides to level I blister a little around the big toe area. Recently I switched to 2 pairs of socks, which was incredible for the blisters. However, I think this may have been part of the shin problems. As far as drop on the shoes, thats a foreign term to me completely. Here are my shoes:
http://www.roadrunnersports.com/rrs...072a0-4eed-480c-af2b-edcbb9d92a91&sc=C6X1A110
Road Runner has their shoes divided on the wall between neutral, over and under or whatever the terms are
I'm neutral so that's the only one's I look at. But if you know you are an over-pronator I would only look at the one's in that section on the wall or on their site. I also know that not all fit experts are the same, my chiropractor uses the same Road Runner and suggested who to use. Go in with the shoes you have an, explain what you were told and what has happened. They should still have your test on file, at least that's my understanding. My store is great to work with, I've returned a ton of socks.
As for the socks, not sure if it's the issues, but I have a huge problem with seams and my little toes, so I started wearing my socks inside out because then the seams don't rub my toes. Found Wigwam socks at Target, one of their one off let's sell these for a few months, and they don't have seams! They are the only brand I've found that don't have seams. Generally people understand why when I tell them I wear my socks inside out, but I have gotten some weird looks. You do need to be careful of the type of socks you choose to wear inside out, I've found the ones that have more cushion, or what I call, loose thread nubs, when worn inside out will cause odd rubbing or movement of your foot, think of how your bare foot moves on the carpet, so I stay away from something with too much of that or too long of a pile, to steal from carpets again.
You might give this a shot and see if it helps along with a different pair of shoes.
ETA - I have a couple pairs of Coolmesh II socks, they are dual layer, like a sock inside a sock, but aren't thick, to help prevent blisters. These might be a better route than 2 pairs of socks. I still wear these inside out
