Hi folks, after repairing a number of steel parts for my Land Rover I sent them to be galvanized. They've come back very nicely done but there are a number of places where the galvanizers have drilled small holes to vent box-section during the dipping process. Before I seam seal, etch prime and paint the newly galv'd pieces I need to fill these holes without damaging the galvanized finish. Rubber bungs will not be suitable and I don't want to use body-filler, plastic flush-fit bungs might do the job, but the ideal would really be some small metal bungs which I could tap into the holes and paint over. I've been told that such a creature exists but I can't find them on Google. Could anyone point me in the right direction? Many thanks indeed.