@Horton I have included a picture to better describe my question. Without the release mechanism engaged, I can place the heel of the boot flush against the heel cup, but then the release mechanism doesn't look fully engaged. There is a gap, almost a 1/4", is this typical for a reflex system? This is my first reflex binding. Coming from an alpine skiing background, this doesn't look right. @ColeGiacopuzzi this is what I was trying to describe. I am in the furthest hole backward on my Senate so I cannot try moving my boot backwards. If the boot was flush with the heel cup I could try the boot placement you had suggested.