Hello, a Honda SL 125 Bj 1974 has been at my home for a long time. In itself very well preserved, it would hardly, or no restoration work would be necessary, apart from a fine crack in the crankcase, on the oil drain screw. Since the crankcase is one, I believe aluminum casting part, without seperate oil tray, I can exchange this also only hard, without immediately installing a new engine. Despite a long search, I have neither an engine, nor reasonable ideas for reperatur/abdi I tried to cut a larger thread at the oil drain screw, but the crack was “cut with”, so it still exists. The question is now, since the Honda unfortunately loses dripping oil, I won’t bring it through the tuv, what could I do to seal the crack, or where can I get a new engine from? Thanks already in advance Michael P.S. if necessary I can attach pictures of course.