Re adjust the box. Many times people tighten the adjuster to eliminate play without it being centered. There is a high spot on the sector to prevent wonder when going straight. Once past that high spot in either direction it should steer easy unless it was over tightened when not centered. It is critical when an alignment is done that the box is centered. so when steering in either direction it comes down off the high spot. The high spot like I said is to prevent wonder when going straight.