I couldn’t find anything much that said that custom was found to make a significant difference compared to good brand non custom. I am not trying to rubbish anyone’s experiences with customs just explain how I got to not using them. Others are of course welcome to do their own research as it is a very frequent problem!
Obviously I decided to try a different route, I was better with Footreviver insoles not so much with gel activs (they seemed to make my foot pain worse). I also know mine mostly comes from issues higher up and I have good foot confo and normal movement so decided to see if I could just get them to work better. It was amazing for me when that worked! I haven’t had symptoms for some time, no treatment, and nothing exercise wise beyond my normal Pilates which doesnt include foot work