New to me SB 10-R

[woodtickgreg]

I'm almost certain that the "staples" are factory applied. There are several of them on the apron casting and they appear to be applied where there was a poor fill of the mold leading to a small void or knit line. They are under the paint in painted areas and, as you can see in the pictures, the wick hole is drilled through one of them. So, they were probably applied in the factory.

Yup me too, I had a couple of them on my apron casting too. They must have been a bugger to cast.