I was looking at the pic of your frame and it looks like you have the desirable tear drop lugs. I'm no expert but from what i have read they are very thin points that require more than a little skill to do right. I have those as does unworthy1. Also on my frame the bottom of the lugs are thinned to almost smooth to frame. I guess the tear drops are not thinned, well because there isn't much to them. I don't know why some have the tear drops and some don't but might be a quality indicator.