Thermoquad tuning

Sorry for the late reply! I was out where its stored just briefly for ol' Canadian turkey supper last weekend and I think I have it sorted. I bent back that stop and it now has full opening of the primaries. I am going to have to play with its relationship with the linkage that tunes the secondary opening as I had it bent really far trying to get more out of the primaries. (Sorry I didn't get any pictures I completely forgot).

My next question is this. How far open should the primaries be when the secondary's start to open, the book I have just says "the secondary's should open once the primaries have opened to the required spec" real helpful that (There is not spec at the back of the book). It's a small primaries carb fyi. Additionally is there any downside (other than not having secondary's until later) to delaying the secondary's opening later than the spec? I'm going for a mileage build and wouldn't mind a bit more room .

Thanks for all your help!!