Hello and Welcome
Before we purchased our Argosy, we were also looking at an Avion. A gentleman by the name of Don Horn, here in Colorado, gave us some info about trailers in general (what to look for that might cause troubles), but he owned an Avion and has some wonderful pictures of it on a site:[
http://hornoss.com/donhorn/avion/index.html
Maybe he can give you more specific info on your Avion. Worth a try?! Leigh
