Boy that sure looks like it would seriously weaken the screw head such that any serious calcium buildup making the screw had to remove, would likely snap the screw head in two. Lucky that was a very low mileage engine so that didn't happen.
Just between you and me Mike, I think I'd replace those banjo bolts with some new one!?!? ;c)
Yes, I did have that one on my watch list and was planning on throwing a low-ball bid on it, only because I already have a very nice one, otherwise I'd have offered you some tough competition and you wouldn't have gotten it quite that cheaply. But it went beyond what I had in mind before I had a chance to enter that offer. Still, as I recall, you got that one at what should be considered a bargain, for a semi-rare Jensen in such near new condition!