I wonder if you use good high temp RTV sealer on surfaces of brass washer. It would it work? It's a low pressure / low temp area at that end. It's already cooled by the water injection. Mate it up to where it came off. So it fits back into the grooves and such where it came off. Thin coat of sealer you saved $50.
I contacted racerxxx last monday about these welch plugs and he said he was all out and would have to make more. Well he made more and I got them today in only one week (pretty fast/reasonable to produce some and send some to me). I highly recommended these quality plugs for repairing the common leaking head pipe plugs on our 'doos and Dan is a good guy to deal with. Thanks!