I don't have your year, but I will post anyway as it may be a similar Workhorse chassis, not sure. I have a 2004 model that I bought new. I have had many minor problems with the coach as with almost all MH's.
The major problem I have had with the chassis are the brakes. The parking brake has gone out, and could be quite expensive to repair. I was quoted $4000 for a new unit. I'm going to get some more quotes.
Another problem has been with the service brakes. About a year ago the front brakes did not release completely while driving, and overheated, boiling the fluid and causing me to lose brake pressure, very scary. That was around a $2000 repair.