It is slightly possible there can be a galvanic corrosion problem between the stainless coil and the Zinc/Al body. Also the stainless coil and the brass fitting..... and all three in close proximity. Gas always has some water in it which will act as an electrolyte. Not to mention the cost of the tools, drill and tap for one helicoil.
As far as I can tell, CarbKings advice is to find a new air horn.
JW Cave Man 51 is trying to goop you to success. He means well. He will be a good scapegoat on this one.
By the way Darren, your motor an under hood work is excellent looking. Good job.
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn
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