First I sprayed everything with oven cleaner ,after letting it sit awhile I rinsed and scrubbed. I did this a couple of times. I then used a degreaser and scrubbed a little. I just used a steel brush by hand for the rest. Make sure you use Rustoleum High Heat ULTRA. It gives a high gloss, easy...
Yours looks pretty good..just a little clean up. If you do need to paint anything use the Rustoleum HIGH HEAT ULTRA . It is easy to use and really holds up....
https://www.amazon.com/exec/obidos/ASIN/B001UE7MW4/tvwb-20
Thats funny,a couple years ago,we drove a hundred miles to pick ours up.It would't fit in our truck so we had to take it apart in the rain.It was worth it though...best gasser I have ever had...