Peresonally I have some pet peeves with JD loaders. Primarily with their self levelling system. Why in the world are there no bushings welded onto the inside of the triangle where the self levelling arms meet? That is an epic fail in engineering 101 as far as I'm concerned.
I also haven't seen many 740 loaders without those levelling arms welded up on one end or the other if they have any age on them.
They sure are a nice loader to use when they in good shape though, and I do like the visibility they offer.
I've been thinking about taking mine to the local machine shop for new pins and bushings, but I'm a bit afraid of what it might cost. I'd like to find just the loader itself without any hydraulics, joystick, or loader frame but that seems like a pretty hard item to track down.