It just so happens the awning is out right now drying out from this weekend's trip. I took two pics that will hopefully help show you what you need to see. The insert image doesn't seem to want to work right now, so I will send the pics in a PM.
This is the way I work mine, and I assume it is the correct way, however it is different than the awnings on my previous two SOB trailers...about 2/3 of the way up the main arms are round metal stops that are ~3/8" in diameter. If you pull the main arms all the way out on both sides at the same time (requires two people), then one person can hold one side real tight, while the other person extends the support arm (cross brace) out on that same side and slide it up against the metal stop, and then secure by tightening the knob on the support arm. Then repeat the same steps for the other side.
This awning is not the most user friendly as it takes two people to operate unlike newer awnings, however once the awning is secure it seams to hold nice and tight. Also, my awning looks like new after nearly 35 years, so I'm very impressed with the longevity of the awning material.
do you still have the sink out of your tw. I have the identical sink with problems but a horrible repair done prior to my ownership. email is berickn@yahoo.com
Thanks for the nice comments about my post! I was wondering if you received my PM about the GX470... I'm looking at possibly getting a used one, and was wondering how happy you are with the GX towing. Has it been powerful / stable enough for you?
Thanks!
Marc