this doesnt make sense

[1972BlueC20]

Ok so I been trying to resolve an off idle / off cruise bog or hesitation issue for weeks now.

I've covered all the bases before digging into the carb. You can read all that I've done and checked before delving into my carb HERE :

http://67-72chevytrucks.com/vboard/s...d.php?t=661895

I'm dealing with a Holley street avenger 670

So I was pretty certain I needed to increase my squirter size up 3-5 sizes. I read online that my carb should've had a size .031 squirter in it from the factory. So I ordered a tube style .035 and installed it. I now have horrible throttle response. So I looked closely at the squirter that I had just pulled out and it was marked 42!!!

How on earth did my carb have a .042 squirted in it from the factory??

So now I'm confused, do I go up to .045 + ?

It doesn't seem right that a stock GM crate engine (part # 19210008) would need such a big squirter to run right.

What do you guys think?