We have some retaining wall steps that are in dire need of repair. We would like to re-level some of them and re-adhere all of the cap stones so they no longer rock.
Is it possible to create a spacer between the cap stone and the retaining wall block to level the stairs instead of having to dig out the entire step? If so, what would be the best way to create the spacer?
It looks like a previous owner has already done this with some sort of mortar on some stairs. I was thinking after using mortar or a plastic shim as a spacer, then using some polymeric sand to level the step. But then how would I adhere the capstone?