You’re trying to use a spring/retainer package that’s designed for more installed height than that head provides.

There are alternative non-beehives that easily fit those heads.
If you feel like you have to use beehives, you can either use shorter ones....... or start thinking about custom parts.

26918’s would work fine at 1.720 with .563 lift.

For the non-beehive applications, the Comp tool steel and Titanium retainers add about .030” installed height over the steel counterparts.
I don’t know it the same holds true for the beehive retainers or not.