Check the nuts on the top of the struts. I had a similar issue when I did my shocks. Come to find out I forgot to tighten the strut nuts properly, lol.
03 Mach 1: New toy 00 Kenne Bell GT vert: Sold 04 Sonic Blue GT: Missed 96 GT: First. Sold. 06 F250 6.0L 4x4: Studded, EGR delete, IDP tunes, 5" Straight pipe, S&B CAI