When you put the legs back on, put stainless fender washers on the inside and out, and a stainless nut instead of the Weber wingnut.
Using a couple of sockets, I "cup" the fender washer that goes on the outside a little deeper than the radius of the bowl. That way, when you tighten the nut, the washer will flatten out to match the bowl. Really makes the legs sturdy.
I have an old SJ like that and a sanded the legs and painted them black. Also ground off the lower vent rivets and replaced with stainless bolts, washers and nuts after re-forming the vents.
Good luck with the refurb.