Hi, I own a 1996 Ford F-250 with the 7.3 liter diesel. I recently replace the vacuum pump, power steering pump, and serpentine belt. It all seems to be running well, but now it requires more force to turn at low speeds. I don't have any groaning and the fluid levels have been topped off with the correct ATF. I used a re-manufactured power steering pump and did not flush the fluid. Any feedback or solutions would be greatly appreciated, thanks.