Glad you got it sorted out with the replacement springs.
I saw that difference in the fam, but haven't gotten to that point on my truck yet. I "think" it may be because of the thickness of the front cab support and the measurement is from top of frame to bottom of floor panel there. Not sure on the rear being only 3/4". What does your rear clearance measure? If you're at 3/4" and things line up correctly on the front clip, then it must be correct.
