i have a 08 fx2 sport 5.4 does this happen to you guys
when going aroung 30mph the truck feels like it down shifts it just dont feel right does this happen to you guys or just normal for this

 

Yep I have it in my 08 FX4... It feels like it downshifts really hard around 25-30 mph when you're decelerating. I took it into the dealer 3 times and they took the differential and transmission appart too and still didn't find anything.... I don't really notice it much anymore, but last fall when it only had 10k miles it it was really bad like every time I decelerated. I think you should be good though

 

mine do's the same thing on my 2007 screw xlt. was concerned about it, but maybe that is they way they are.