I had considered adding the EZ-Just while I had the motor down last year. Didn't do it. This spring I'm doing break-in and find I need to get into the Idle adjustment and there isn't enough space to comfortably get a screwdriver into the CV-40's mixture location while on the bike.
So ordered the EZ_Just and had it in a couple of days. Pulled the carb, and installed the new mix screw. Done in 15 minutes and now I can make tweaks on the fly.
Bike is a 97 Sportster.