can't help with rivet size, but did take my fabric off to clean:
http://shufti.wordpress.com/2011/09/16/vanagon-cleaning-the-shadyboy-awning/

alistair

On 2012-05-16, at 5:30 PM, Pete O wrote:

> Just wondering if anyone has changed out the fabric on their ShadyBoy.
> Ours is almost 10 years old on our Vanagon and started to collect a lot of
> rainwater last camping season, so we just took delivery of a new awning and
> are planning to mount it in the old hardware.  Anyone know what size the
> rivet tool is to get to the little rivet next to the snaps in the storage
> case?
>
> As always, any info appreciated!
>
>
> --
> Pete
> '79 Westy "Aardvark"
> '87 Westy "JoesVan"
> WWW.Busesbythebeach.org <http://WWW.Busesbythebeach.com>