Well, I hope it was a personal preference and not that the FOX setup sucks. I picked them up too...
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For me, it really was a personal preference thing.
My truck rides the best when dead level, which puts the COG/balance point biased towards the rear slightly, so that the rear feels like it has a slight load on it.
As set from Fox, my front ride height was ~0.5" lower than expected so I was biased way to the front, which gives me a ride that I hate!
When I pulled the Foxs off to jig them to adjust the COs up 0.5'-0.625", I swapped my Eibachs back in temporarily..(and I had already reset them to lift ~0.625" higher than when they were previously in..the rear is ~0.75-0.875" higher than previously..so I'm not actually dead level with the Eibachs anymore..and I can tell and am not totally satisfied now either).
Unfortunately, I strained my rotator cuff/bicep which took me out of action for almost 5 weeks (finally got a cortisone shot last week).
I decided to sell the Foxs since I wouldn't be able to get them back in for maybe months.
What I did notice in the very short time that I had the Foxs in was..they are fantastic at higher speeds on very rough roads! The faster the better, the rougher the better!
They are way better than my Eibachs for rough roads, but my Eibachs are very slightly better than them on smooth, slightly bumpy roads. BUT, if the Foxs had been set to give me a dead level ride height, and then the ride attitude I like, they may have been perfect then but I sold the Foxs so won't know.
I haven't lifted weights for almost 6 weeks now, and would still be months away from doing any further suspension work now since it's so f-ing cold here in Wisconsin now and my truck doesn't fit in my heated garage.
Don't let me experience with the Foxs dissuade you from them. I'm SUPER picky about my suspension setups..and given time, I'm sure I would have dialed them in. I would maybe consider pre-adjusting the Preload before installing them. My truck is very option loaded and heavy, so I only got about 2" lift..if they had given me ~2.5-2.75" as I'd expected..I'm sure they'd still be on my truck.