Starting an overhaul on '77 Holiday Rambler Wide World

westend wrote:
...The stove burners can be soaked in a sauce of baking soda and water to remove grime....

So I've done this overnight and they seem to be better but still a lot of gunk on them. I just filled up the sink with water and dumped a big load of baking soda in there...not sure if it was a sauce per say...just water with baking soda. Would it hurt them if I took a scrubber to them and scrubbed them gently? I'm not really sure what's inside of them...propably just chambers and metal?