Check the "back to square one" topic first. What is the best way to fix this crack? Pa has asked for help. and opinions, but it's on the last page. I guess a topic gets dead here pretty quick.
Duh...........Pa-Simers at it again. Looks like a chain gave out once and clipped the opening or something got dropped on to it. I'd lightly dremel the crack and weld from the outside, without breaking clear through. I'm thinking a qualified welder would agree. The welder, IMO, would patch stake, small areas equally spaced apart, in order to keep the heat down to a minimum. He would then most likely, fill in between the stakes, until the whole length of the crack was fused back together. He may even decide to drill a small hole at each end of the crack before welding it all up, to keep the crack from growing any longer. You still may have to disassemble it so the dirt and lube doesn't contaminate the welding process. Come on welders....am I close ?? Pa