The slugs in the R-392 do this. I've had good luck gluing then back on the screws... Dennis D. W7QHO Glendale, CA **************** On Dec 30, 2012, at 2:18 PM, Richard Knoppow wrote: > I discovered I have two bad antenna input coils L-8 and > L-12. The slugs have pulled off the threaded screws.