Sounds like Colin is happy with the rebuild, re-valve and spring I did for his stock ’07 GSXR750:
Just got back from a trackday at Thunderhill with the full 5-mile course. Holy cow that shock set up is sweet! I see what you mean about not needing the spacers for the back shock. The bike handles much more nimbly than before and felt super solid.
Thanks for your work and advice!