4/6 drop measurement needed please

[70StepsideC10]

I'm hoping you guys that have a 4/6 drop can help me out. I installed an ECE drop kit last year and the front end is lower than it should be, it looks like they sent me the wrong springs. I spoke with the guys at ECE last fall about it and they said they would make it right but it was just as I was putting the truck away for the winter so we agreed we would revisit it in the spring. Well as most of you may know by now they have closed, so now I need to figure this all out without their wealth of knowledge.

Can anyone with a 4/6 drop take a measurement from the center of the wheel/hub to the bottom edge of the fender directly above, as shown in this picture? That will give me a good idea of what drop my front end actually has so I can determine next steps. Thanks in advance.