@MrHoss- I don't need to drill as the rivet already has separated and the vent came off. I have the vent for that. The one I want to replace is the lid vent. I don't think it would be right to have lid vent on a bowl for this kettle. I have already replaced both grates as they would be better for cooking. Also, was going to replace legs, triangle an wheels to almost brand new ones from my spare kettles, but decided not to do it and keep it original.
So, if someone has one spare 2 tab vent they could sell- let me know.
@MacEggs- the lid took the longest to finish. Gunk on both sides had to be scraped off. I was real careful not to scratch beautiful green finish. It was real exciting revealing little bit at a time to see what was underneath. Just as tough getting the lid vent clean too as I did not want to scratch or mark the aluminum finish. Inside the bowl were really caked on too. Some areas as thick as 1/4 to 3/8 inch. Thanks!