Re:
yes I suspect something "homemade" too, though if this was their only frame, it certainly was ambitious. The cable guide is a metal tube brazed in. I'm not sure what is up with the screw in the BB shell.. the BB is stuck so right now that mystery has to wait
If i decide this frame is a keeper I might have it repainted and have the fillets cleaned up at the same time.. assuming it's even possible to get rid of the pin holes. There's a frame builder in my city who does fillet brazing so there is a possibility it could happen