My crankcase had a crack from the closest bushing hole to the pinion shaft hole and there was an old weld repair there that also was showing the crack. So I took it to a professional who welds mostly aluminum, he carefully ground out the old weld and tried to stitch it, short bursts then let it cool. In spite of that we found more cracks developing and I’m afraid it’s a goner. I’ve got one more hope that another fellow I know may be able to rescue it, he has had a career of repairing architectural antiquities made of cast metal, but I’m not optimistic. Sigh.... anyone have a spare RH crank case they’d be willing to sell me?