My first post here. I've acquired a basket 87 500. Someone pressed off the 2nd driven gear off the drive shaft. Is this gear welded onto the shaft? I figure it must be as it looks as if it was spot welded to the shaft and the ID of the gear is round as is the shaft. If so, what can a guy do? Maybe heli-arc the gear back on? The diagram of the trans shows the gear as being removable and able to be purchased new. Thanks for any help.