Isolastic set-up without engine?

Hi, I would first like to mention I may have posted this question elsewhere(the wrong place) Err! Opps!What I want to know is it worth setting up the Isolastic mounts without the engine & transmission being installed, or do I need to fit all the kit before shim/adjust the mounts?Any thoughts?The bike is undergoing a complete renorvation (because that's how I bought it & it really needs it)