RB700 w/ Super Elys... cartridge alignment needed?

I know Rega thinks that their 3-hole mounting system means that no alignment is needed (when using a Rega cartridge), but is this true? It seems there is still some room for the cart to wiggle a bit in the headshell prior to tightening.

Do I not need to worry about this, or should I pick up an alignment tool to be sure? If needed, can anyone recommend an accurate solution for my setup?