Update - I contacted HBi via email and got a reply right away so if you want a set of reduced power striker springs, contact them via email.
Most excellent.
Got the reduced power springs from HBi today. Replaced the original striker spring with the 3.0# and the CGW trigger pull went from 5.5 to 4.5 using Wheeler gauge. Test fired it with S&B 9mm (known to be tougher primer than Fed/American Eagle) and no problem lighting them. I'm happy with the outcome!