Hey Pat,
I like this 3rd one a bit more then 2nd. You first one is still the best.
With #2 and 3, I think the issue is you are in too tight. I think being higher does help, but I think with everything so large in the frame, its hard to get that miniature look. Compare #1 which worked perfectly compared to #2 and 3, the main difference is the size of the objects in the shot. If you have any shots similar to #3 but shot wider with the planes and hanger being about 1/4 of the size they are now, I think it would end up looking much more miniature.
Jim