I'm in the process of rebuilding a 1952 8N. This was a running and working tractor when I pulled into the garage for a rebuild. I bought the tractor in August of 2019, so I don't have a lot of history with it but it has never given me any trouble starting up. However, when I removed the engine and was dismantling everything from the block, I noticed the flywheel ring gear was welded on, and the weld had cracked and the gear had slipped about 1/2". Everything I have read up to this point does not mention welding the ring gear onto the flywheel. It is a press fit. Is this correct? I suspect I will remove the old gear, grind the welds down smooth and install a new one the proper way. Or is it okay the way it is?