Mechanical secondary opening ratio question

[XH29N0G]

Can someone school me on how best to decide on the ratio for opening the secondaries? 

I have a QF 830 SS and it comes with a linkage that opens the secondaries at 40%.  I decided to try changing the linkage to 1:1 to see what the difference would be.  The throttle responds differently - because the carburetor is opening sooner - and I like it.  The A/F generally looks good (even better than before) for hard acceleration from a roll, but normal driving looks like it will need some work.  It also seems like the secondaries are opened as the idle speed is adjusted. 

So, what I am looking for is any information or advice on this.  Is it worth considering a 1:1 linkage, or better to just stick with the 40% opening.  I think if I could get a mile delay (like 10%) that would be ideal, but it does not look like that is feasible.

[flyinlow]

My QF is VS so this is just an guess. I did notice that feature when shoping for carbs.

I think 40% would work better for a non race car. Under part throttle the vacuum signal would be stronger using just the front two bores, giving better carburation under smaller airflows.