Ok since you are a professional builder I gotta take the chance to learn and ask what is the advantages of the G2 in your opinion
The Dio reed is way too big & heavy & is usually only held onto the cylinder with two small screws.
They are prone to air leaks & the mounting screws getting pulled out of the cylinder.
The Oz reed is OK, but it's a little too small, & it restricts the air flow at high RPMs.
The G2 is a much larger reed that doesn't restrict the air flow. I also like that the reed case has a lot more 'meat' to it if you want to make the intake port larger. The G2 also gives you more options for installing a larger carb.
One thing I highly suggest, is to use red Loctite on the mounting screws!!!