"holstein13"....I know many of us looked at the OP's profile to see what he was currently driving. I know "Ivylog" looked because he noted that the OP was driving a GMC truck. When someone moves from a fifth wheel or TT to a motor home, the first thing they notice is that they have to steer constantly. There are hundreds of posts about this. The advice given by many was spot on. Either it's a suspension issue or the OP wasn't use to driving a motor home.
Your coach is 45' long, has a tag axle and Comfort Steer. It will steer like an SUV. It in no way steers like a 2003 Newmar, even if the 2003 had everything new under the front end.