47-55.1 A little more drop for Posies springs?

[ChevDog1]

I have a 55.1 GMC that I lowered (stock suspension) with front and rear Posies Super Slide springs. The front ended up about 1" higher than the rear. I haven't put many miles on it yet (less than 100). Does anyone have these springs, and will they settle a bit? If not, is there a way to get another 1" of drop out of the front? I really don't want to add the cost and complexity of swapping to an independent front end. I have been looking at dropped axles and they all seem to start at 3", which is too much. Would prefer 1-2" of additional drop. Thanks!