I had one break into a semicircle at the pin hole, and JB Weld saved me there, but that looks a lot more iffy. I'd get on eBay and find one that needs rebuilt, and just transfer what you can. Would probably be cheaper.
You can try running with that, and you can probably rig it up with something to make it somewhat reliable, and it probably would do okay as is, but you just can't be sure. Buy some peace of mind. The day float posts are a replaceable or better built item would be nice.