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I have orthotics made up my my podiatrist a few years ago. They are carbon fibre so lasting well (me not so). I have tried using them with standard insoles in my Brooks Glycerin but they don't work. I did try using flat insoles over the top (red) but it didn't work either. Last effort could be to put the flat shock absorber insoles then prosthetics but the latter really jar.
What do other users do ? Do they just use the orthotics, use the insole with the trainer or swap it out ?