I purchased 6 of these for my 2006 158 shc 3500 with 55,000 miles and immediately noticed the noise differential is amazing! The cab is so much quieter especially with all the panels and floor dynamatted. I am however worried I may have made a mistake with these because driving on the highway I am battleing keeping this thing in my lane. Seems to have a lot of play in the steering wheel now. For long trips this becomes a very big headache. Tires are inflated to 65psi. I dont haul but a couple dirtbikes so weight isnt the issue. It has only ever been used to haul motorcycles so I dont think the struts are bad. Is there something I can do for my straight line stability?? New better struts / sway bars / air bags? Anything? Maybe a wider tire just for the fronts - Is there anything that is close to the 29.4 diameter but wider? Thanks for any suggestions!