Just wanted to see what experience others have had with having shoe repair shops cut running shoes down to be zero drop. I started getting my shoes zeroed out at the suggestion of Runner's Corner in Orem, UT to take my shoes to Village Shoemaker, also in Orem. I run either in VFF Bikilas for road runs or in zeroed out trail running shoes for trail running.
It took some trial and error to figure out what works for me. I learned that Brooks Cascadias have a big cushioning gel pod in the heel, and when the heel wedge got sliced out, I ended up with a lower heel than forefoot. I always hurt when wearing them and took them back to get a slim wedge put back in so they would be truly zero drop. My current favorites are La Sportiva Fireblades. Since they don't have too big a heel to begin with, it's not as much of a change to the shoe structure to bring the heel down by 10mm. I ran Rim to Rim to Rim of the Grand Canyon a couple months ago in the zeroed Fireblades and had no issues except for my cramped toes due to the somewhat goofy pointed toe shape. If La Sportiva would continue in the minimalist direction (remember the Slingshots that Krupicka used to whittle down?) and also make their shoes foot-shaped, they would have a killer trail shoe.