My 2012 Lexington also had the play in the steering and did drift . Had to use buth hands to constantly correct.
Did the much recomended alignment using adjustable camber bushings, aligned to the specs posted in the forums (do alignment search).
Night and day difference, steer with one hand and virtually no slop or wander. Passing big rigs no longer a problem.
Only thing seems to be the cost. Some like another poster have paid several hundred.
I bought the Ingalls Adjustable Camber Bushings #59400 on Amazon for $27.50 each and the alignment and install of the bushings ran $65.00 at a local tire dealer that could take a large rig. Brought them the specs and they did it no problem. Total was right at $120.00.